Wikipedia:Articles for deletion/Region (geometry)


 * The following discussion is an archived debate of the proposed deletion of the article below. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review).  No further edits should be made to this page.

The result was delete. ✗ plicit  01:58, 18 January 2022 (UTC)

Region (geometry)

 * – ( View AfD View log | edits since nomination)

"Region" is not, as far as I know, used with any specific technical meaning in mathematics, so it is a mistake to write an article with that title as if it meant something specific. As stated in the edit summaries of multiple attempts to redirect this to something more useful, this is an unsourced vague WP:DICDEF without any attempt to distinguish its topic from area or shape or Domain (mathematical analysis) or Connected component (topology) or set (mathematics), without even a clear-enough definition to tell which of those is intended or what counts as a region and what doesn't, and without any useful information for readers beyond a vague wave at a list of topics that can just as easily be found with more detail in Euclidean geometry. Its creator, User:Fgnievinski, is the sole editor of this article, and has made no attempt at turning it into a proper article. If (as seems clear from repeated reverts) Fgnievinski is not going to allow this to remain as a redirect to a better article, it should just be deleted. —David Eppstein (talk) 01:39, 3 January 2022 (UTC)
 * Note: This discussion has been included in the list of Mathematics-related deletion discussions. —David Eppstein (talk) 01:42, 3 January 2022 (UTC)
 * Oppose "Region" is widely mentioned in geometry articles, although not linked as often as it could; for a trivial example, see Disk (mathematics), whose lead reads: "In geometry, a disk (also spelled disc) is the region in a plane bounded by a circle.". The distinction with "area" (and "length" and "volume") is well defined in Region (mathematics), where it says "the amount or extent" of 1D, 2D, and 3D regions, respectively; I've now edited the article to emphasize those measures are scalar quantities. I've also edited the article to cite a reference sourcing the above concepts. Maybe the trouble is those are very basic concepts? Sometimes it feels fellow editors forget Wikipedia is meant for a broad audience, not one's peers. I also protest the nominator's previous WP:BLANKANDREDIRECT when a merge would have been more appropriate. I also note in passing I've tried to initiate a discussion which I hoped would be more fruitful, but it was responded with a threat of AfD, whose tone seemed intimidating. fgnievinski (talk) 02:21, 3 January 2022 (UTC)
 * I also note the proponent has been removing links to the proposed article (as in, e.g., convex region, a special kind of geometric region). They have also been redirecting, without merging, other geometry topics, such Hypersphere. fgnievinski (talk) 01:10, 11 January 2022 (UTC)
 * Yes, I have made a single undo today, after one of your bad edits to spam links to this bad article across the encyclopedia. Please refrain from doing that. —David Eppstein (talk) 02:48, 11 January 2022 (UTC)

Please add new comments below this notice. Thanks,  Sandstein   12:43, 11 January 2022 (UTC)
 * Comment In my search for this topic, I didn't find much evidence that there is a cohesive concept of region in pure geometry. But there is more evidence for a concept of region in applied geometry, particularly in computer graphics and digital image processing. Region filling (flood fill) is a basic operation in raster computer graphics. Clipping algorithms concentrate on a region of interest. Morphological image processing has operations that act on connected regions, e.g., Morphological Operations. And software systems that manipulate geometric objects often have a notion of region, e.g. Wolfram language, IRAF, X Window System Protocol. I think a broad concept article could be formed around these applied geometry uses. -- 04:37, 3 January 2022 (UTC)
 * Do you have evidence that these uses are part of a single cohesive body of work that uses this word with a specific technical meaning, or is it just a common English word used with its colloquial meaning? —David Eppstein (talk) 04:59, 3 January 2022 (UTC)
 * Delete - per David Eppstein's comments - this is just a word used in its colloquial sense, and fails on WP:NOTDICT. PianoDan (talk) 17:49, 3 January 2022 (UTC)
 * comment If the Region (geometry) is deleted, I think Region (mathematics) is also deleted. Also, the lead sentence says "in mathematical analysis" when the article was called Region (mathematics).--SilverMatsu (talk) 15:26, 7 January 2022 (UTC)
 * It seems that a new article has been created recently (Macbeath regions).--SilverMatsu (talk) 22:47, 7 January 2022 (UTC)
 *  Relisted to generate a more thorough discussion and clearer consensus.


 * Delete, if the term doesn't denote a coherent entity in mathematics, then we should not have an article on it. Chiswick Chap (talk) 16:27, 11 January 2022 (UTC)*
 * Delete The use of this word in geometry beyond its use as a colloquial term to design subsets is not supported by the current version of the article, and it seems that it will stay this way.jraimbau (talk) 15:18, 12 January 2022 (UTC)
 * Delete This is not one of those cases where the everyday word and the mathematical term have diverged so much in meaning that we need an encyclopedia article on the latter. XOR&#39;easter (talk) 01:30, 14 January 2022 (UTC)


 * The above discussion is preserved as an archive of the debate. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.