Wikipedia:Miscellany for deletion/Portal:Tensors

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

The result of the discussion was: delete. &spades;PMC&spades; (talk) 04:01, 13 April 2019 (UTC)

Portal:Tensors


Nav box harvesting portal by TTH. The only image is repeated, and there is a weird " Failed to parse (syntax error): {\displaystyle \mathbf{T}^{(\mathbf{v)} " error suggesting the portal was not reviewed after publishing. If you check the selected articles you can display a third version of almost the same graphic on the page at once. Selected articles like Hermann Günther Grassmann and Albert Einstein don't seem very in scope.

I asked about these math portals at WikiProject math and this one was called hyper specific. Legacypac (talk) 07:30, 6 April 2019 (UTC)

\left(S_{ij}\right)=-\left(\begin{array}{c|c} t_{ij} & \mathbf{S}/ic\\ \hline \mathbf{S}/ic & U \end{array}\right) $$ where $$t_{ij}$$ is Maxwell's stress tensor, $$\mathbf{S}$$ is Poynting's vector and $$U$$ is the energy density... is the energy-impulsion tensor of the electromagnetic field. If you don't know why Albert Einstein could be involved here, better ask for help than reading a random collection of snippets. Pldx1 (talk) 10:14, 6 April 2019 (UTC)
 * Delete. Did You Know that the creating script was so far from artificial intelligence that it used Euclid, the guy who was figuring all computations, to illustrate a topic about how to compute all figures ? By the way, the sentence The order (also degree or rank) of a tensor is thus the sum of the orders of its arguments plus the order of the resulting tensor would have been detected as rather strange by anyone having ever encountered a tensor. Pldx1 (talk) 10:14, 6 April 2019 (UTC)
 * Comment. One can also add: Did You Know that tensor $$
 * Delete - We certainly don't need a portal for anything that is extremely useful after profound understanding but has the capability to baffle. Robert McClenon (talk) 15:38, 6 April 2019 (UTC)
 * Delete. 1/ Drive-by portalspam; 2/ Narrow topic, 3/ Redundant to the navbox Template:Tensors; 4/ almost unused.
 * Created by the portalspammer @The Transhumanist on 3 Jan 2018 as one of ten portals created within an hour, only one minute after Portal:Knot theory. This is no some sort of careful creation worthy of scrutiny; it's just a passing fancy.
 * The topic tensor is a sub-sub-field of mathematics. It is not what WP:POG requires broad subject areas, which are likely to attract large numbers of interested readers and portal maintainers.
 * It is built off the navbox Template:Tensors.  This makes the portal merely a fork of the navbox, with much less utility than the navbox because:
 * the navbox displays a full list of the articles, but the portal displays only one page at a time.
 * the navbox should be present on every page in the set. The portal always requires navigation to a separate page.
 * The topic's main page works much better as a navigational hub, because it includes:
 * both the topic navbox and any related navboxes
 * A full summary of the topic rather than an excerpt of the lede.
 * Almost unused: from 05/01/2019 - 31/03/2019, the portal got only 29 pageview in total, or 6 per day whereas the head article tensor got 136,142 view, or 1,583/day. Yet again, the evidence is clear that readers don't want these portals, because the head article works fine as a navigational hub. -- Brown HairedGirl (talk) • (contribs) 17:15, 12 April 2019 (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 page's talk page or in a deletion review). No further edits should be made to this page.