User talk:David Eppstein/2024a

Your GA nomination of Small set expansion hypothesis
Hi there, I'm pleased to inform you that I've begun reviewing the article Small set expansion hypothesis you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Sohom Datta -- Sohom Datta (talk) 19:43, 1 January 2024 (UTC)

Your GA nomination of Simple polygon
Hi there, I'm pleased to inform you that I've begun reviewing the article Simple polygon you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Dedhert.Jr -- Dedhert.Jr (talk) 04:42, 2 January 2024 (UTC)


 * User:Sohom Datta and User:Dedhert.Jr: thanks to both of you for taking this on! I'm traveling for the next few days and after that I may be busy preparing for the start of the term, so please don't worry if I'm a little slow to respond. —David Eppstein (talk) 06:17, 2 January 2024 (UTC)
 * Good luck! Dedhert.Jr (talk) 07:05, 2 January 2024 (UTC)
 * Good luck, no issues :) Sohom (talk) 07:15, 2 January 2024 (UTC)

Disruptive edit and edit war at Power set
Could you act as an administrator against the behavior of a WP:SPA who is edit warring for including his Python program in Power set: 8 additions (without any summary) of their out-of-scope Python program, which were reverted by three different editors (including myself). They got three warnings on their talk page, to which they answered three times by blanking their talk page. No answer at Talk:Power set. This is not only a case of WP:edit warring, but the refusal of any discussion shows that this is also a case of WP:NOTHERE.

By the way, I which a happy new year to you. D.Lazard (talk) 12:26, 3 January 2024 (UTC)
 * Talk page stalker here. You might have quicker response from WP:3RRN, especially based on time zones.  Russ Woodroofe (talk) 13:04, 3 January 2024 (UTC)
 * I have posted a report on WP:3RRN. D.Lazard (talk) 16:13, 3 January 2024 (UTC)
 * I was mostly offline today so even a favorable timezone wouldn't have helped. Looks like you got it resolved there, anyway. —David Eppstein (talk) 02:07, 4 January 2024 (UTC)

Your GA nomination of Simple polygon
The article Simple polygon you nominated as a good article has passed ; see Talk:Simple polygon for comments about the article, and Talk:Simple polygon/GA1 for the nomination. Well done! If the article has never appeared on the Main Page as a "Did you know" item, and has not appeared within the last year either as "Today's featured article", or as a bold link under "In the news" or in the "On this day" prose section, you can nominate it within the next seven days to appear at DYK. Bolded names with dates listed at the bottom of the "On this day" column do not affect DYK eligibility. Message delivered by ChristieBot, on behalf of Dedhert.Jr -- Dedhert.Jr (talk) 15:23, 4 January 2024 (UTC)

Tips
Sorry. But are there any tips from you for writing GA Mathematics? I'm currently thinking of another GA potential, but it seems that I'm stuck while trying to improve them. The last time was because of broad coverage in the article Square pyramid, and I could not repeat the same mistake. Dedhert.Jr (talk) 15:43, 4 January 2024 (UTC)


 * The main one is to self-review the article at least as thoroughly as if you were a GA reviewer, and fix up everything that as a reviewer you would think should be fixed up. The main parts that usually need improvement are:
 * Referencing. Everything needs a reference. Most non-GA articles are missing sources for a lot of their material.
 * Using clear non-technical language instead of formulas and jargon whenever possible.
 * Covering all the main aspects of the topic without getting lost in details and related but off-topic material.
 * Arranging the article into a clear and logical overall structure, that also puts the less-technical material earlier and the more-technical material later.
 * —David Eppstein (talk) 16:45, 4 January 2024 (UTC)
 * @David Eppstein Thanks for the tips. I have learn that GA must require references and not using some technical languages. However, the only thing that I confused is the coverage. For example, if I'm writing about any polyhedron, I'm thinking about the property and construction (if it's possible) are the obvious things that need to be explained in detail. However, there are some articles on polyhedra that do not have applications, related polyhedra, or graph theory. I have looked up the difference of both articles Triaugmented triangular prism (mentioning about the graphs more specifically) and Jessen icosahedron (it doesn't mention the applications and graph, but the related polyhedra instead).
 * So, in conclusion, does all of those three things particularly important and must be written, or there are some kind of optional? Dedhert.Jr (talk) 09:59, 5 January 2024 (UTC)
 * Whether different articles have the same organization into sections is much less important than whether they each have an organization that makes sense and that covers all of the important research into their topics. —David Eppstein (talk) 19:01, 5 January 2024 (UTC)
 * Thank you for the tips. Dedhert.Jr (talk) 08:00, 6 January 2024 (UTC)
 * Oh. One more thing. You said that GA should using clear non-technical language instead of formulas and jargons. But what about the article with unavoidable technical? It reminds me about three articles of yours: Dehn invariant, Free abelian group, and Mobius strip (which is failed on the first review and passed on the next one)? Dedhert.Jr (talk) 14:35, 6 January 2024 (UTC)
 * That's why I said to use non-technical language only "whenever possible". Often some parts of the article are technical, because it is not possible to cover the necessary material in a non-technical way. —David Eppstein (talk) 16:51, 6 January 2024 (UTC)
 * @David Eppstein Thank you so much. By the way, I'm planning to improve a polyhedra article, but this also involves graph theory as well, and I have no knowledge of graph theory. In that case, can you help me? I will expand the article, and before that, I'm waiting for your answer. Dedhert.Jr (talk) 09:31, 8 January 2024 (UTC)

line breaks before footnotes
Trying to put around every sentence followed by a footnote to prevent the footnote from ever splitting onto a new line by itself, the way you are (I thinK?) trying to do at prime number seems hopeless, and somewhat clutters markup. I wonder if it would make more sense to petition the mediawiki developers to automatically force footnotes to stick to the preceding character, to solve this at a higher level. –jacobolus (t) 07:37, 5 January 2024 (UTC)
 * It's not just footnotes. Mediawiki also does not force mathematics formulas to stick to the following punctuation. The cases I just added to prime number also concern a different line break style issue: if a sentence or clause ends in a variable or other very short mathematics formula, the space between that formula and the previous word should not be broken. In LaTeX, one handles this with a no-break space: a sentence ending in a variable~$x$. In mediawiki, it's better to use nowrap because a no-break space would not prevent the other problems with punctuation and footnotes. The issue with short formulas at the ends of sentences is not something that can be handled well automatically. —David Eppstein (talk) 07:45, 5 January 2024 (UTC)
 * Adding around every short sentence-ending word also seems like overkill here, adding substantial source markup clutter. If this can't be handled automatically (or at worst with explicit  ), does it really need to be done?
 * In any event, line breaks before footnote links seem like a universal mediawiki problem, which should probably still be addressed. It is possible to accomplish in CSS, using:, where FEFF is an (invisible) 'zero width no-break space' or alternately \200D 'zero width joiner' character inside the  . The first of those unicode characters is deprecated and we're supposed to use the 'word joiner' character to replace it, but that one doesn't actually suppress line breaks in my browser; the second is an abuse since zero-width joiner is supposed to be for something else; not sure if there's a "right" character to use that actually works. Unfortunately this isn't a trick we can generically do to combine math tags with following punctuation, because we sometimes want to split between math tags and other elements (e.g. two math tags back-to-back, explicitly split up to allow line breaks). –jacobolus (t) 08:43, 5 January 2024 (UTC)
 * Oh actually, just an empty "content" also works to prevent a line break in my browser. Not sure if that is intended behavior, but easier than putting extra characters. So it can just be: . –jacobolus (t) 09:25, 5 January 2024 (UTC)

Your GA nomination of Small set expansion hypothesis
The article Small set expansion hypothesis you nominated as a good article has been placed on hold. The article is close to meeting the good article criteria, but there are some minor changes or clarifications needing to be addressed. If these are fixed within 7 days, the article will pass; otherwise it may fail. See Talk:Small set expansion hypothesis and Talk:Small set expansion hypothesis/GA1 for issues which need to be addressed. Message delivered by ChristieBot, on behalf of Sohom Datta -- Sohom Datta (talk) 11:41, 7 January 2024 (UTC)

Your GA nomination of Small set expansion hypothesis
The article Small set expansion hypothesis you nominated as a good article has passed ; see Talk:Small set expansion hypothesis for comments about the article, and Talk:Small set expansion hypothesis/GA1 for the nomination. Well done! If the article has never appeared on the Main Page as a "Did you know" item, and has not appeared within the last year either as "Today's featured article", or as a bold link under "In the news" or in the "On this day" prose section, you can nominate it within the next seven days to appear at DYK. Bolded names with dates listed at the bottom of the "On this day" column do not affect DYK eligibility. Message delivered by ChristieBot, on behalf of Sohom Datta -- Sohom Datta (talk) 09:41, 8 January 2024 (UTC)

Graph of triangular bipyramid
Hi, @David Eppstein. I recently found the source about the application of the graph of triangular bipyramid in this https://doi.org/10.1016/j.amc.2023.128313. But I cannot access this source, can you help me with what it mentions about that graph?

If you wonder why I asked too much in this day, I deeply apologize. All I propose for these questions is regarding the potential GA, as I discussed above. This is about the article Triangular bipyramid that I prepared before nomination, and the only problem is the graph, as that section is somewhat short and it could probably need to be expanded. Thank you so much for your help Dedhert.Jr (talk) 03:51, 9 January 2024 (UTC)


 * Ok, sent. —David Eppstein (talk) 06:28, 9 January 2024 (UTC)
 * I wasn't expect to sent me that journal to my Gmail. Thanks anyway. I owe so much on you :( Dedhert.Jr (talk) 06:39, 9 January 2024 (UTC)
 * @David Eppstein Sorry. One more thing. I have expand the graph section, but I'm not sure whether this could be violate WP:PRIMARY. So, here:
 * The graph of a triangular bipyramid can used in the electrical network theory. This field includes a graph's relationship to the electrical network; the concept is resistance distance, which measures two vertices of a graph using the electrical network. The Kirchoff index is calculated by summing all resistance distance between all pairs of vertices in a graph as the structure descriptor. shows that multiple graphs of triangular bipyramid can be used to construct a chain by arranging them linearly, as in the following illustration. The resistance distance of such construction can be computed by applying the series and parallel principles, star-mesh transformation, and Y-Δ transformation. Its structure can be applied in the study of synthesis and properties of metal-organic frameworks.
 * I'm aware that this could be quickfail GA. Dedhert.Jr (talk) 03:36, 12 January 2024 (UTC)


 * I'm not convinced this is really an application, nor particularly interesting. It seems to be merely an example. Any graph can have multiple copies arranged into a chain and the resisted calculated as a series network. —David Eppstein (talk) 07:25, 12 January 2024 (UTC)


 * I'll be honest. I'm confused about the statement that is an example, rather than application. Is there an alternative way to write the chain of triangular bipyramid graphs? I have no clue again about this field. Dedhert.Jr (talk) 12:11, 12 January 2024 (UTC)

Undue warning of a block
Hi. On 01:29, 10 January 2024, you gave me a warning that I could "likely get blocked" for a legitimate reply I made to another editor, reply that you even seemed to have misunderstood. I have to remind you that you were an involved party in the discussion thread and you also had a topic dispute with me, and therefore I consider it highly inappropriate that you gave me such a warning. Per WP:INVOLVED,

Per Misuse of administrative tools, I have to add that it is demoralizing that even though I try to take care of properly analyzing my replies in threads and I spend hours trying my best to make quality edits, I get such an undue warning from an administrator for a legitimate reply. I have expanded on my explanation of what I actually intended to say in the relevant discussion thread. Thanks for your attention. Sincerely, Thinker78  (talk) 04:53, 10 January 2024 (UTC)


 * I didn't say that I would be the one to block you, if you insisted on putting your theories about inserting OR into the leads of BLPs into practice. And I also haven't seen you putting it into practice. But thank you for playing. —David Eppstein (talk) 06:30, 10 January 2024 (UTC)
 * "if you insisted on putting your theories about inserting OR into the leads of BLPs into practice". Can you quote the relevant text where I reportedly supported inserting OR into leads? Because it seems again that you are misconstruing what I wrote. Or you can strikethrough your comment. Thanks. Thinker78  (talk) 06:42, 10 January 2024 (UTC)
 * "instead of taking it out I would say it should be considered how evident its pronunciation is" ... "Not all cases need a citation" ... "I find it helpful to at least provide the pronunciation according to certain general common usage rather than none." ... [Re: is an OR kind of idea we couldn't employ]: "We could, ceteris paribus" —David Eppstein (talk) 06:48, 10 January 2024 (UTC)
 * instead of taking it out I would say it should be considered how evident its pronunciation is. It is unclear to me why you construe this as original research. Did you notice the context? Because literally it is based on the WP:MOSPRON guideline, which I quoted there before writing this sentence, in the same comment.
 * Notice in the guideline: "common English rendering", "if necessary", "common words", "pronunciation [...] obvious from the spelling", "counterintuitive pronunciation". From there I then wrote "it should be considered how evident its pronunciation is". I mean it is right there in the guideline. How in the world you reach the conclusion that what I wrote is original research then? Can you please explain? Thinker78  (talk) 07:12, 10 January 2024 (UTC)
 * Not all cases need a citation. This is literally what the verifiability policy indicates.
 * If you notice, it states only 2 or 3 cases in which citations are required. Namely, for all quotations, any material whose verifiability has been challenged or is likely to be challenged. It doesn't state that there needs to be a citation in all other cases.
 * Furthermore, the explanatory footnote of said policy states,
 * I encourage you to properly analyze Wikipedia guidance in order not to be misconstruing editors comments. Thinker78  (talk) 07:28, 10 January 2024 (UTC)
 * There is a limit to how many times I will provide an actual response when repeatedly asked "Can you please explain?" with a wall of text that provides no indication that you have digested the previous explanations. —David Eppstein (talk) 07:36, 10 January 2024 (UTC)
 * It seems you have explained nothing as to how you reached your conclusions that what I wrote are "theories about inserting OR into the leads of BLPs", for which you even stated I could "likely get blocked".
 * Per Casting aspersions,
 * Thinker78 (talk) 07:56, 10 January 2024 (UTC)
 * Please stop wasting the time of both of us. I'm sure you have more constructive things to do than haranguing me, and I certainly have better things to do than to read and respond to your walls of text and your endless green blocks of undigested copy-paste. I don't think I have wronged you by informing you that your opinion runs on the wrong side of BLP, but if you disagree, you are not getting anywhere here. —David Eppstein (talk) 08:02, 10 January 2024 (UTC)
 * Per Casting aspersions,
 * Thinker78 (talk) 07:56, 10 January 2024 (UTC)
 * Please stop wasting the time of both of us. I'm sure you have more constructive things to do than haranguing me, and I certainly have better things to do than to read and respond to your walls of text and your endless green blocks of undigested copy-paste. I don't think I have wronged you by informing you that your opinion runs on the wrong side of BLP, but if you disagree, you are not getting anywhere here. —David Eppstein (talk) 08:02, 10 January 2024 (UTC)

A positive element!
Happy new year, and I wonder what you make of this. Drmies (talk) 15:17, 12 January 2024 (UTC)
 * $$*$$-algebras are not something I know much about. I suspect that the phrase "positive element" is used in lots of areas of mathematics to mean different things, and that multiple of these things may be notable, so we may eventually need a dab on that phrase. —David Eppstein (talk) 17:59, 12 January 2024 (UTC)
 * It looks OK from what I know about *-algebras. (Bit list-heavy and all that, but I've seen worse from new editors.) I agree that we might eventually need a dab page here. XOR&#39;easter (talk) 18:58, 12 January 2024 (UTC)

Your GA nomination of Gale–Shapley algorithm
Hi there, I'm pleased to inform you that I've begun reviewing the article Gale–Shapley algorithm you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Femke -- Femke (talk) 20:40, 13 January 2024 (UTC)

DYK for Hyperbolic spiral
 Schwede 66  00:02, 14 January 2024 (UTC)

Your GA nomination of Gale–Shapley algorithm
The article Gale–Shapley algorithm you nominated as a good article has passed ; see Talk:Gale–Shapley algorithm for comments about the article, and Talk:Gale–Shapley algorithm/GA1 for the nomination. Well done! If the article has never appeared on the Main Page as a "Did you know" item, and has not appeared within the last year either as "Today's featured article", or as a bold link under "In the news" or in the "On this day" prose section, you can nominate it within the next seven days to appear at DYK. Bolded names with dates listed at the bottom of the "On this day" column do not affect DYK eligibility. Message delivered by ChristieBot, on behalf of Femke -- Femke (talk) 20:01, 14 January 2024 (UTC)

Your GA nomination of Perfect graph
The article Perfect graph you nominated as a good article has been placed on hold. The article is close to meeting the good article criteria, but there are some minor changes or clarifications needing to be addressed. If these are fixed within 7 days, the article will pass; otherwise it may fail. See Talk:Perfect graph and Talk:Perfect graph/GA1 for issues which need to be addressed. Message delivered by ChristieBot, on behalf of Brachy0008 -- Brachy0008 (talk) 03:43, 15 January 2024 (UTC)

Your article (17- animal)
Hello Mr.Eppste.Your article in fawiki is going to  be a good article, can explain a little more lines about Generalizations? about Paul stakmayer theory? Thanks Arbanoos (talk) 16:14, 22 January 2024 (UTC)


 * Everything I know about it is already in the article. —David Eppstein (talk) 17:51, 22 January 2024 (UTC)
 * ok.thanks Arbanoos (talk) 19:08, 22 January 2024 (UTC)

Basel problem problem
Yes, that's why I made the odd-looking edit that I made. You appeared to want the symbol to appear unitalicized, so that's what I did to it. Your way works too, although the citation metadata and error-checking are no longer available, for what that's worth. – Jonesey95 (talk) 21:48, 22 January 2024 (UTC)


 * No, I wanted the symbol italicized and the rest of the formula not. The problem is that math is a hacky workaround for &lt;math&gt; that only sort of works, and in particular doesn't work in italicized contexts, but that &lt;math&gt; is bad in linked text because Wikimedia's insistence on using rendered images of mathematics formulas instead of Mathjax causes the formula to show up as black-and-white instead of colored blue. This example has linked italic text so neither will work. But putting direct text styling commands inside the math markup as you did is somehow even worse than either of those two things because then both the markup and the formatting are broken. If you ever find yourself trying to do the same thing again, take a step back and find a different way that at least preserves the validity of the mathematics markup. —David Eppstein (talk) 23:30, 22 January 2024 (UTC)
 * When I fix syntax errors like the one I fixed in that article, I try to preserve the editor's intent and leave the display unchanged (unless it is clearly broken). That is what I did in this case. Since the math template uses span tags, there did not seem to be any harm in nesting another span tag inside it; that is valid HTML and routinely done. In case you didn't know: the reason that math does not accept italics in its value when it is already wrapped in italic markup is that you end up with misnested tags: the parser reads it as "open italic, then open span, then close italic, then open italic, then close span, then close italic":  even if that was not the editor's intent. That usage comes up on a report, and we gnomes show up to fix it. – Jonesey95 (talk) 15:23, 23 January 2024 (UTC)
 * The problem with the style of fix you chose, putting explicit style markup spans into the formula, is that it completely obscures the mathematical meaning of the formula. The semantics becomes lost in the syntax. It would be like writing English words with spans describing whether each individual letter is a vowel or a consonant. You could do that, and the rendered appearance might be as intended, but it makes the markup impossible to use or edit. —David Eppstein (talk) 17:33, 23 January 2024 (UTC)

DYK for Peckham Rock
—Kusma (talk) 00:02, 26 January 2024 (UTC) GalliumBot (talk • contribs) (he/it) 03:28, 27 January 2024 (UTC)

Kirsten Morris
Hi David, The updates I made to Kirsten's page are based on this https://uwaterloo.ca/applied-mathematics/people-profiles/kirsten-morris I am new to wiki edits and didn't realize the etiquette. Sorry about this. Please let me know the best practice for proceeding with my updates. thanks. Amchow (talk) 20:42, 26 January 2024 (UTC)


 * See WP:Citing sources. As well as not including the sources for the information you added, you added some low-level details that I think are better omitted from an encyclopedia article such as visiting positions (see WP:NOTCV — unlike a curriculum vitae, an encyclopedia article should not list the details of every academic activity of the subject) and removed some properly-sourced and relevant material, such as Morris's motivation for beginning to work in mathematics. On the other hand, the Control Systems Society Distinguished Member Award and IFAC Pavel J. Nowacki Distinguished Lecturer are definitely worth including, with sources. —David Eppstein (talk) 21:05, 26 January 2024 (UTC)

Women in Red February 2024
--Lajmmoore (talk 20:08, 28 January 2024 (UTC) via MassMessaging

CS1 error on Kepler conjecture
Hello, I'm Qwerfjkl (bot). I have automatically detected that this edit performed by you, on the page Kepler conjecture, may have introduced referencing errors. They are as follows: Please check this page and fix the errors highlighted. If you think this is a false positive, you can [//en.wikipedia.org/w/index.php?action=edit&preload=User:Qwerfjkl/Botpreload&editintro=User:Qwerfjkl/boteditintro&minor=&title=User_talk:Qwerfjkl&preloadtitle=Qwerfjkl%20(bot)%20–%20David_Eppstein&section=new&preloadparams%5b%5d=&preloadparams%5b%5d=1200237954 report it to my operator]. Thanks, Qwerfjkl (bot) (talk) 03:14, 29 January 2024 (UTC)
 * A "bare URL and missing title" error. References show this error when they do not have a title. Please edit the article to add the appropriate title parameter to the reference. ([//en.wikipedia.org/w/index.php?title=Kepler_conjecture&action=edit&minor=minor&summary=Fixing+reference+error+raised+by+%5B%5BUser%3AQwerfjkl%20(bot)%7CQwerfjkl%20(bot)%5D%5D Fix] | [//en.wikipedia.org/w/index.php?title=Wikipedia:Help_desk&action=edit&section=new&preload=User:Qwerfjkl%20(bot)/helpform&preloadtitle=Referencing%20errors%20on%20%5B%5BSpecial%3ADiff%2F1200237954%7CKepler%20conjecture%5D%5D Ask for help])

DYK for Gale–Shapley algorithm
Cas Liber (talk · contribs) 12:03, 30 January 2024 (UTC)

2 to 6 million professors are currently alive
Generally, an h-index of 7 is barely enough to get hired. And an article on a professor need to explain why they are important. No evidence exists on any significant contribution for this person. The citations in the article are no better than a product listing on Home Depot. Abductive (reasoning) 06:30, 3 February 2024 (UTC)


 * Generally, hiring is based on subject-specific knowledge and recommendation letters, not on numerology. And one could quote similar numbers and say the same thing about evidence of significant contributions for, say, Eugenia axillaris or Searsia rosmarinifolia, to name two. —David Eppstein (talk) 07:08, 3 February 2024 (UTC)
 * Mina Ossiander has 94 Google results. Eugenia axillaris has 11,700. And the fact that you don't italicize scientific names says a lot, as does your wikistalking, uncivil response. As can be expected when someone is defending a stub on a non-notable topic—one of two to six million profesors. Abductive  (reasoning) 08:11, 3 February 2024 (UTC)
 * Start a hostile and barely civilly worded thread on my talk page, expect a prickly response. —David Eppstein (talk) 08:18, 3 February 2024 (UTC)
 * I note that you have not given a counterargument as to why the topic is notable. Abductive  (reasoning) 09:54, 3 February 2024 (UTC)
 * Maybe you should try coming in again? Whether or not you agree with it, uour PROD was reverted for a perfectly sensible reason, and no amount of berating here is going to bring it back.  --JBL (talk) 17:23, 3 February 2024 (UTC)
 * Yes, but the bit about not italicizing was devastating, don't you think? EEng 17:36, 3 February 2024 (UTC)

Graph of gyroelongated square pyramid
I have looked up the source, mentioning the graph of gyroelongated square pyramid, and I took this source from the article Fritsch graph. I'm not expert in graph theory; can you tell me what is the property of such graph? Dedhert.Jr (talk) 15:20, 4 February 2024 (UTC)


 * I'm not sure why it should be expected to have interesting properties. —David Eppstein (talk) 19:44, 4 February 2024 (UTC)

How to upload in WikiCommons
Ah. Sorry for asking this. I have made some net polyhedron supported with the source, but how do I upload an image in WikiCommons? It seems I could not comprehend the system of the image license: does redrawn image may be considered as "own work", despite being that the image is not our creation but someone's else from their source? I take an example of yours: File:Triaugmented triangular prism (symmetric net).svg.

Note: I have asked this before, but it seems that I could not understand either. Dedhert.Jr (talk) 07:01, 7 February 2024 (UTC)
 * How I upload to commons is to follow the instructions at Commons:Special:UploadWizard. But I think that doesn't answer your real question, which is how to describe its license and derivation. In the case of an image redrawn from something else on commons, the answer is fairly simple: You say that it's your own work, and that it's derived from some other image. The way I have sometimes done it is to set the "source" to be something like "Own work, derived from (url of other file)." You can see that in, for instance, my images File:4-hex_octahedron.svg and File:Buneman graph.svg. There's a more complicated formatting of the attribution in File:Polyhedral Delta-Y.svg, using the commons "AttribSVG" template, but the basic idea is the same. —David Eppstein (talk) 07:21, 7 February 2024 (UTC)
 * I'll try my best in this case. Dedhert.Jr (talk) 07:31, 7 February 2024 (UTC)
 * @David Eppstein Okay. I have done uploading the image. It's basically the drawing net of an elongated square bipyramid: File:Elongated square bipyramid (symmetric net).svg. Dedhert.Jr (talk) 07:40, 7 February 2024 (UTC)
 * Looks ok to me. I don't think there's any problem with copyright because it's a mathematical construction using simple geometric forms rather than anything with creative choices (see Commons:Commons:Threshold of originality) but it's still good to give credit in that way. —David Eppstein (talk) 07:41, 7 February 2024 (UTC)
 * I always wondered that is it fine to use those colors? I researched that teal and gray are suitable colors, but I'm not sure whether color-blinded readers may look at this. Any recommendation colors, the same way for the triangular bipyramid as well? Dedhert.Jr (talk) 07:44, 7 February 2024 (UTC)
 * I got most of the set of colors I usually use from a Wikipedia discussion about palettes that would still be contrasty enough for color-blind people, but if I had a link to that discussion I don't remember where I put it. If you search you can find other palettes designed with that property; for instance there's one at https://jfly.uni-koeln.de/color/ (search for heading "Set of colors that is unambiguous both to colorblinds and non-colorblinds") and you can test your color choices at https://davidmathlogic.com/colorblind/ —David Eppstein (talk) 08:09, 7 February 2024 (UTC)

Octahedron, square dihedron, and other degenerate construction
Hi. I'm planning to improve an article Octahedron as well. However, I do remember your comments during the review: "If an octahedron is formed by attaching pyramids to every side of a smaller shape, then that smaller shape is the degenerate one that you get by gluing two squares back-to-back." I don't get it: what are you referring to as the "smaller shape" here? What does the degenerate mean here? I have seen the article Degeneracy (mathematics), but it is not helpful to me to understand in the case of a regular octahedron. Dedhert.Jr (talk) 07:01, 14 February 2024 (UTC)


 * It's a square dihedron. —David Eppstein (talk) 07:03, 14 February 2024 (UTC)
 * Oh... Dedhert.Jr (talk) 07:04, 14 February 2024 (UTC)
 * Oh, yeah. Sorry for off-topic question written here. I saw that you were editing the article Regular icosahedron. In general, are you planning for GA nominating someday? I once planned for improving this article, but I was surprised that you have taken over it, and I do not want to interrupt your work. Dedhert.Jr (talk) 04:21, 15 February 2024 (UTC)
 * Probably not that one. I was mostly just cleaning up some reference issues (and then made some other edits while I was looking at it). But I'm done again for now. The one I'm actually working on improving currently rather than just making drive-by cleanups is random binary tree. —David Eppstein (talk) 06:03, 15 February 2024 (UTC)
 * Ah... okay. I'll take that as well. But what about Snub disphenoid? I'm sorry if I ask too much for the articles you have edited before. I'm recently for planning on a project in which all the articles are included. It is WP:GT, bunches of (pre)-GA articles that can be listed into a single topic. I do not want to copy one big template in yours. You may prefer to see it here. Dedhert.Jr (talk) 06:28, 15 February 2024 (UTC)
 * The only polyhedron articles on my own current list of eventual (I hope) GA candidates are Schönhardt polyhedron, Bricard octahedron, and Parallelohedron. —David Eppstein (talk) 07:37, 15 February 2024 (UTC)
 * Ah... I see, then. Well, if these articles are nommed, I could probably review them. By the way, I have done some expansion in the article Regular icosahedron (I'll do the octahedron later). However, the article may have some changes in the reference style, images, and some section structures. Is it fine? Dedhert.Jr (talk) 13:59, 15 February 2024 (UTC)
 * I don't mind if you change those things. —David Eppstein (talk) 18:25, 15 February 2024 (UTC)

Your GA nomination of Schönhardt polyhedron
Hi there, I'm pleased to inform you that I've begun reviewing the article Schönhardt polyhedron you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Dedhert.Jr -- Dedhert.Jr (talk) 02:43, 19 February 2024 (UTC)


 * Comments are provided in the reviewing article. If there are some questions, you can ask me, and I will respond to them swiftly. Dedhert.Jr (talk) 04:19, 19 February 2024 (UTC)

Deletion review for Reşit Inceoğlu
An editor has asked for a deletion review of Reşit Inceoğlu. Because you closed the deletion discussion for this page, speedily deleted it, or otherwise were interested in the page, you might want to participate in the deletion review. Styyx (talk) 15:48, 20 February 2024 (UTC)

Help at AIV
Hi David Eppstein, I can't stay up all night dealing with at least four socks, reported at AIV. Any help will be appreciated. Thanks! 2601:19E:4180:6D50:65F5:930C:B0B2:CD63 (talk) 06:28, 21 February 2024 (UTC)


 * Not clearly vandals, so AIV wasn't really the right board, but obvious enough as socks and as making bad edits. Blocked and tagged. —David Eppstein (talk) 06:38, 21 February 2024 (UTC)


 * Thank you! Another pop up, . I suppose they'll be doing this till their parents get home. 2601:19E:4180:6D50:65F5:930C:B0B2:CD63 (talk) 06:39, 21 February 2024 (UTC)
 * I don't have the tools to find and block their IP; you'll have to find a checkuser for that. —David Eppstein (talk) 06:42, 21 February 2024 (UTC)

Your GA nomination of Schönhardt polyhedron
The article Schönhardt polyhedron you nominated as a good article has passed ; see Talk:Schönhardt polyhedron for comments about the article, and Talk:Schönhardt polyhedron/GA1 for the nomination. Well done! If the article is eligible to appear in the "Did you know" section of the Main Page, you can nominate it within the next seven days. Message delivered by ChristieBot, on behalf of Dedhert.Jr -- Dedhert.Jr (talk) 10:41, 25 February 2024 (UTC)


 * Felicitations to your article. Hopefully there will be more polyhedral articles into the entry of GAN. Dedhert.Jr (talk) 11:55, 25 February 2024 (UTC)

Women in Red March 2024
--Lajmmoore (talk 20:21, 25 February 2024 (UTC) via MassMessaging

The references to 'Heath' and 'Proclus' in the pons asinorum article
Back in October of 2014, you made an extensive edit of the Pons asinorum article in which you introduce two references to 'Heath', in the following form:
 * the proofs of later propositions where Euclid does not cover every case.

and
 * In particular angle B = angle C.

However, the actual reference 'Heath' was never provided. Presumably it is Heath's A History of Greek Mathematics, but in my copies of it, I wasn't able to find anything relevant on pages 251-254 of either volume.

Could you check and complete these references?

Similarly, you provided the following references:


 * Proclus' variation of Euclid's proof proceeds as follows:

and
 * The proof is as follows:

Once again, the actual reference 'Proclus' was never provided, and it is not clear what it refers to. Could you add this reference, too? Reuqr (talk) 21:10, 27 February 2024 (UTC)


 * I'm pretty sure it is Heath's edition of Euclid. —David Eppstein (talk) 21:13, 27 February 2024 (UTC)
 * And the 'Proclus' reference? Reuqr (talk) 22:54, 27 February 2024 (UTC)
 * Ok, you made me look at the actual diff you linked. You should look harder at that diff yourself. None of that content was written by me at that time. It all came from a merge from another article, isosceles triangle theorem, whose history can be found here. You should find who added that material to isosceles triangle theorem and ask them. —David Eppstein (talk) 23:03, 27 February 2024 (UTC)
 * They are in this version of isosceles triangle theorem. --JBL (talk) 23:39, 27 February 2024 (UTC)
 * OK, thank you both! Reuqr (talk) 23:55, 27 February 2024 (UTC)

Your GA nomination of Perfect graph
The article Perfect graph you nominated as a good article has failed ; see Talk:Perfect graph for reasons why the nomination failed. If or when these points have been taken care of, you may apply for a new nomination of the article. Message delivered by ChristieBot, on behalf of Brachy0008 -- Brachy0008 (talk) 04:21, 28 February 2024 (UTC)

Lateral edge and lateral face
Just notice nowadays that the terms of lateral edge and lateral face may be used in prisms as well, instead of pyramids. In this case, can you help me to delete these redirects, or alternatively, putting on the articles as in Edge (geometry) and Face (geometry). I'm kind of confused. Any ideas? Dedhert.Jr (talk) 03:05, 29 February 2024 (UTC)


 * I'm not familiar with that terminology, so I don't have much of an informed opinion on what its correct scope should be. —David Eppstein (talk) 05:55, 29 February 2024 (UTC)

Your reversal of edits to Sergei Mirkin
Thank you for your revision of edits to Sergei Mirkin biography page. I apologize for not realizing that biography pages are not supposed to use as references the subject's scientific publications. That you for pointing that out. I understand this was the reason you reversed all of the edits I made to the page yesterday. Today I checked and removed all other references to Dr Mirkin's publications. However, you also deleted my edits that added references to independent sources: news and review articles about Dr Mirkin's discoveries. As a full-time scientific journal editor I am confident these references are appropriate and accurately reflect Sergei’s contribution to the field. I hope that you’ll find these edits satisfactorily address the concerns outlined in your template message. If you have further suggestions, don’t hesitate to let me know. Thank you again for your time. DoubleHelix23 (talk) 22:16, 3 March 2024 (UTC)

Katalin Farkas
Unfinished category name:

[[Category:Academic staff of the

- Altenmann >talk 01:07, 5 March 2024 (UTC)


 * Thanks, fixed. In general I find this recently-renamed "Academic staff of ..." incredibly annoying to use because even in cases where the category actually uses the same spelling as the main article on the university one then needs to figure out whether to use "the" or not. I think this is a case where I started to write "the", went to check whether that was correct (it wasn't) and got distracted before finishing the category. But my complaints about this naming system have fallen on deaf ears. —David Eppstein (talk) 01:44, 5 March 2024 (UTC)

Dedekind number
I went to the article Dedekind number to learn what Dedekind numbers are. I read the lead, and to check if I'd understood it I tried to figure out for myself what the six monotone Boolean functions of two variables are. Then I came across the "Example" secion, and thought "oh dear, I must have missed something, they're much more complicated than I'd realised." On looking harder, I realised that I'd actually got them right, but the examples were given in a verbose way. I removed all the (in my view) unnecessary words.

You reverted. Your the edit summary "previous version much more clearly expressed the fact that these were all bivariate functions" is true. But there was no need to express it, six times, for a list titled "six monotonic Boolean functions ... of the two-element set {x,y}".

It's up to you. I shan't say any more about this. Maproom (talk) 15:20, 6 March 2024 (UTC)


 * When you say that the functions are x, y, etc, you obscure that the function you call "x" is really a function of two variables that ignores its first argument and returns its second. When you write that the always-false function is "F", you obscure that there are different always-false functions for different numbers of variables.
 * To put it another way: the number of ways of forming monotone Boolean combinations of things, if you do not consider them as bivariate functions, is strictly smaller than the Dedekind numbers. You can take zero things and return true or false. You can take one thing and return it. And you can take two things and and them or or them. That's five combinations. But the number of bivariate functions is six, because there are two different "take one thing and return it" functions when there are two things to take from.
 * I presume you already understand this. But the version of the article you wrote, that I reverted, did not convey this understanding. —David Eppstein (talk) 18:24, 6 March 2024 (UTC)

Sylvester's sequence
Ah. Sorry for disturbing your article Sylvester's sequence. It seems that it is already listed in WP:SWEEPS2023, which includes the potential of GAR. I have no clue why, but one reason is that it does have unsourced paragraphs. I have added some, but the rest of the paragraphs I could not find it. Dedhert.Jr (talk) 04:05, 8 March 2024 (UTC)

Tesseract in Interstellar
The tesseract in Interstellar is clearly a multidimensional object. Kip Thorne explains in this video that it is a four-dimensional object, but only one side of the tesseract is connected to Murphy's bedroom, with Cooper is on the other side. In a normal cube, Cooper would just be looking at an ordinary wall, but because it has an extra dimension, he is looking at his daughter's bedroom from six different locations at once: Hipporoo (talk) 22:05, 8 March 2024 (UTC)
 * That does not make it a convex polyhedron in a four-dimensional Euclidean space with eight three-dimensional cubes as its faces. For one thing, Einsteinian time-space is not a Euclidean space. —David Eppstein (talk) 23:15, 8 March 2024 (UTC)
 * We don't actually see the tesseract in the movie from the outside, except from a narrow entrance point which doesn't tell us anything about its outward appearance. And the only part of the inside we see is where Cooper is brought. It's what we do see that is supposed to tell us this is a cube with four spatial dimensions, as explained by Thorne. Hipporoo (talk) 06:30, 9 March 2024 (UTC)
 * @Hipporoo Would anything at all change if he explained that it was actually a Clifford torus in a space of two complex dimensions? or other technical phrases that provide the appropriate sense of wonder and incomprehensibility but had even less connection to actual use of mathematics? —David Eppstein (talk) 07:19, 9 March 2024 (UTC)

Ezra Finzi
Hope you're great, You recently undid the deletion tag I had placed on Ezra Finzi article, stating as being top-billed in a movie. Based on the available sources, could you identify any reliable source from the article proving that please?....I did a research on the topic before that (because I wished to expand it but nothing was there to add).

NOTE ANUwrites 10:42, 10 March 2024 (UTC)
 * Three of the sources are from IMDb which isn't reliable.
 * Three are the actor profiles with less/no information about the topic. They cant be main.
 * One is an interview about the topic's father named Samuel Finzi.


 * That's not the point. A7 speedy deletion is not about reliable sources. It is only about whether the article makes a credible statement of significance for the subject. Problems with sourcing can be handled in other ways. A7 is not the way. —David Eppstein (talk) 16:28, 10 March 2024 (UTC)

Holding a grudge
Seriously, I cannot understand where you have got this idea from. I did not need to be told that maths editors are willing to clean up; I have nominated three maths articles at GAR and all three have been saved, which is a success rate unmatched by editors of any other topic. Yes, there has been grumpiness and a good deal of sniping at each other, but in the end all the articles have been improved, which is something no other project, not even MILHIST, can say.

I started a discussion on maths articles trying to see if if we could carve out an exemption from the WP:GACR for them, not in some targeted harassment campaign, and I genuinely find it quite hurtful that you should twist my motives to such an extent, while levelling accusations of battlegrounding and insulting an entire project. I don't think anyone ever wants to go to AN, so can we please sort this out? &#126;~ AirshipJungleman29 (talk) 10:50, 11 March 2024 (UTC)


 * As evidence for holding a grudge, let's look at your comment Special:Diff/1212693194, referring to an incident months ago that I would have long ago forgotten if you didn't keep bringing it up. As for the battlegrounding and insulting an entire project, the thread itself stands in monument to that. Your battlegrounding has already driven two good mathematics editors away from the GA process. Your battlegrounding is evident in this very comment in your repeated threats to drag this to AN if I don't stop complaining about your behavior. —David Eppstein (talk) 15:49, 11 March 2024 (UTC)
 * I have brought it up precisely once, as have you in a discussion not even tangentially related to me. &#126;~ AirshipJungleman29 (talk) 16:16, 11 March 2024 (UTC)

Your GA nomination of Descartes' theorem
Hi there, I'm pleased to inform you that I've begun reviewing the article Descartes' theorem you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Kusma -- Kusma (talk) 21:22, 11 March 2024 (UTC)

article about Maura Biava
Hey there! I would like to create an article about the artist Maura Biava but I see a similar article was previously deleted by you. I'll try and write it according to the guidelines of wikipedia, but if you have any advice, please share! Ariaserg (talk) 13:25, 14 March 2024 (UTC)


 * I don't remember deleting such an article and Wikipedia has never had nor deleted an article under the title "Maura Biava". Anyway, my general advice would be to choose a pool of subjects you might want to create articles on and then only create the ones that are unquestionably notable, rather than settling from the start on someone who might not be notable. In the case of fine artists, choose artists in the collections of multiple major museums; Biava is in at least one but we need more than one. Don't puff up the article with minor accomplishments like shows at commercial galleries or permanent collection at some random office building; only keep the major ones like collection in the Stedelijk. Use a small number of the references in the article, focused on independent neutral publications that go in depth about the subject (for instance, newspaper reviews of solo shows) rather than interviews, lightly-edited press releases, or exhibit announcements. Only write what can be sourced in the references. And avoid using International Art English to describe the artist's work; write in plain English. —David Eppstein (talk) 17:43, 14 March 2024 (UTC)

Woflram Research
We have discussed about MathWorld whether they are reliable or not in WP:WPM, but what about Wolfram Research. I have took the article Snub disphenoid to improve it, but the Wolfram Research reference seems have a doubt relation with MathWorld beside of its error technical template. Dedhert.Jr (talk) 05:12, 15 March 2024 (UTC)


 * In the past, there have been both good-faith efforts to add lots of Wolfram links to Wikipedia articles by independent editors, and COI efforts to add lots of Wolfram links to Wikipedia articles by Wolfram employees. My general approach is to avoid when unnecessary, and always avoid for terminology issues or issues relating to Wolfram himself, but sometimes they are the only source to say explicitly something obvious, and in that case they may be the best source to use. Wolfram Alpha, on the other hand, is essentially a search engine, and should be avoided for the same reason that links to search pages from other search engines are to be avoided (they fail WP:ELNO #9). The one in snub disphenoid appears to be trying to wriggle out of that prohibition by telling you the search string to use rather than giving a direct link, but it's no better. It's not a good source. If you can't find a better published replacement, you should just omit that claim. —David Eppstein (talk) 05:40, 15 March 2024 (UTC)
 * Noted it. But what about the sources such as journals and books contains the calculation or facts that is cited from Wolfram Alpha or MathWorld? Would it remain as dubious fact, or it seems they are checked its accuracy again until it is published officially? Dedhert.Jr (talk) 13:12, 15 March 2024 (UTC)
 * If a source is reliable, but gives a valid calculation that it in turn cites to a source that we would consider unreliable, and we have reason to believe that the source actually checked the calculation and vouches for its accuracy, then it's probably ok. Lots of claims in scientific papers are cited to "personal communication", a type of source that we would avoid as unverifiable, but we can still cite the claim to the paper it appears in. —David Eppstein (talk) 18:03, 15 March 2024 (UTC)

Your GA nomination of Descartes' theorem
The article Descartes' theorem you nominated as a good article has been placed on hold. The article is close to meeting the good article criteria, but there are some minor changes or clarifications needing to be addressed. If these are fixed within 7 days, the article will pass; otherwise it may fail. See Talk:Descartes' theorem and Talk:Descartes' theorem/GA1 for issues which need to be addressed. Message delivered by ChristieBot, on behalf of Kusma -- Kusma (talk) 10:43, 16 March 2024 (UTC)

Your GA nomination of Perfect graph
Hi there, I'm pleased to inform you that I've begun reviewing the article Perfect graph you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Jakob.scholbach -- Jakob.scholbach (talk) 13:22, 17 March 2024 (UTC)

DYK for Schönhardt polyhedron
—Ganesha811 (talk) 00:02, 18 March 2024 (UTC)

AMS Photos from JMM
Hi David. At the Joint Math Meetings a professional photographer takes photos of AMS members and sends the photos to them with full permission to use them as they like. Can someone upload that photo to Wikimedia Commons? What do they give for permissions? Mvitulli (talk) 17:25, 19 March 2024 (UTC)


 * Maybe they choose what license they like and then forward the permission email to permissions-commons@wikimedia.org ? That's what I'd try, anyway, but commons enforcement of copyright tends to be bureaucratic and capricious, so no idea if that would stick. —David Eppstein (talk) 17:46, 19 March 2024 (UTC)
 * Thanks! I'll tell her to try that. Mvitulli (talk) 18:01, 19 March 2024 (UTC)

Your GA nomination of Descartes' theorem
The article Descartes' theorem you nominated as a good article has passed ; see Talk:Descartes' theorem for comments about the article, and Talk:Descartes' theorem/GA1 for the nomination. Well done! If the article is eligible to appear in the "Did you know" section of the Main Page, you can nominate it within the next seven days. Message delivered by ChristieBot, on behalf of Kusma -- Kusma (talk) 18:03, 23 March 2024 (UTC)


 * Thanks! I fully intend to put the whole poem into a sidebar once it becomes PD, in a few years. —David Eppstein (talk) 18:09, 23 March 2024 (UTC)

Your GA nomination of Random binary tree
Hi there, I'm pleased to inform you that I've begun reviewing the article Random binary tree you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Czarking0 -- Czarking0 (talk) 02:43, 28 March 2024 (UTC)

Your GA nomination of Random binary tree
The article Random binary tree you nominated as a good article has passed ; see Talk:Random binary tree for comments about the article, and Talk:Random binary tree/GA1 for the nomination. Well done! If the article is eligible to appear in the "Did you know" section of the Main Page, you can nominate it within the next seven days. Message delivered by ChristieBot, on behalf of Czarking0 -- Czarking0 (talk) 03:22, 29 March 2024 (UTC)

Your GA nomination of Earth–Moon problem
Hi there, I'm pleased to inform you that I've begun reviewing the article Earth–Moon problem you nominated for GA-status according to the criteria. This process may take up to 7 days. Feel free to contact me with any questions or comments you might have during this period. Message delivered by ChristieBot, on behalf of Kusma -- Kusma (talk) 08:02, 30 March 2024 (UTC)


 * Thanks! I guess this WikiCup stage runs through the end of April? I was worried it was only until the end of March and I wouldn't have time to pay attention to this until it was too late for this to count for you. I should be less swamped in a week or so. —David Eppstein (talk) 08:12, 30 March 2024 (UTC)
 * Don't worry about it. The WikiCup round runs for another month (and if my FAC passes I won't have any problems getting through). I have no idea what the cutoff for the GA Backlog drive is, but the worst thing that can happen is that I get the wrong barnstar :) I sometimes need something like the Cup or the backlog drive to remind me, but I actually enjoy reviewing. —Kusma (talk) 15:38, 30 March 2024 (UTC)

Your GA nomination of Earth–Moon problem
The article Earth–Moon problem you nominated as a good article has been placed on hold. The article is close to meeting the good article criteria, but there are some minor changes or clarifications needing to be addressed. If these are fixed within 7 days, the article will pass; otherwise it may fail. See Talk:Earth–Moon problem and Talk:Earth–Moon problem/GA1 for issues which need to be addressed. Message delivered by ChristieBot, on behalf of Kusma -- Kusma (talk) 12:21, 30 March 2024 (UTC)

Women in Red April 2024
--Lajmmoore (talk 19:41, 30 March 2024 (UTC) via MassMessaging