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This is an old revision of this page, as edited by D.Lazard (talk | contribs) at 12:43, 6 May 2025 (Listing Wikipedia:Articles for deletion/Catalan Geode.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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Mathematics

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 14:08, 13 May 2025 (UTC)[reply]

Catalan Geode (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Entirely based on a single one-month-old primary source. Delete per WP:OR and WP:GNG. D.Lazard (talk) 12:43, 6 May 2025 (UTC)[reply]

Delete: the primary source has no citations has not been cited. I see no notability here. —Quantling (talk | contribs) 13:29, 6 May 2025 (UTC)[reply]
Hi - the paper was published in The American Mathematical Monthly and contains numerous citations, can you elaborate on your comments? — preceding comment by User:Jasonbook99
I apologize for my ambiguously worded comment; I have modified it. Yes, I can believe that the primary source cites other papers. However, no papers have ever cited this primary source according to Google Scholar. If this result is notable, we need to have some evidence of that. —Quantling (talk | contribs) 13:52, 6 May 2025 (UTC)[reply]
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.
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 no consensus‎. This is near a consensus to keep or merge the article, but the discussion did not get there. Malinaccier (talk) 20:53, 26 May 2025 (UTC)[reply]

Solinas prime (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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This appears to be a made up name and topic. Of the sources that have ever appeared in the article, it is attested to only in sources that trace the name back to this Wikipedia article, via https://oeis.org/A165255 . This is true both of the original topic of the article (primes of the form ) and the new topic (as of this complete rewrite from 2017). The PROD was removed by an IP who pointed to [2], a work by Solinas that does not use the name "Solinas prime". Any encyclopedic content from the sources without the hoax name could be included at Mersenne_prime#Generalizations (which already cites this source). JBL (talk) 22:00, 4 May 2025 (UTC)[reply]

Relisted to generate a more thorough discussion and clearer consensus.
Please add new comments below this notice. Thanks, Liz Read! Talk! 23:21, 11 May 2025 (UTC)[reply]
A search in WP:The Wikipedia Library shows a few papers about the concept. A google search show the concept precedes the 2009 wikipedia article. Examples from 2002, 2006 and 2008: [4] [5] [6]. Two sources in the article are from 1999 [7] [8]. I don't think the concept is made up. Itzcuauhtli11 (talk) 15:23, 12 May 2025 (UTC)[reply]
  • Keep: Solinas primes are a recognized class of prime numbers with applications in cryptography, particularly in ECC, among other areas. I found multiple high-quality academic sources in which they are directly discussed, including IEEE and Springer (WP:RS):
I've also checked Google Scholar [15], which shows pages of academic results for Solinas primes, laying to rest any claim of them being fringe. NIST, the gold standard in cybersecurity, has also recommended Solinas primes for cryptographic protocols. This topic easily meets WP:GNG. HerBauhaus (talk) 13:46, 13 May 2025 (UTC)[reply]
Relisted to generate a more thorough discussion and clearer consensus.
Please add new comments below this notice. Thanks, Ambrosiawater (talk) 05:35, 19 May 2025 (UTC)[reply]
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.
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 14:08, 11 May 2025 (UTC)[reply]

Roshdi Khalil (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Potentially notable mathematician but there has been some discussion on whether he is notable on talk and that has not been resolved. Looking for a wider discussion. A note tag has been placed on the article. Fails WP:SIGCOV. scope_creepTalk 11:25, 4 May 2025 (UTC)[reply]

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.
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 merge‎ to Optimal radix choice. – robertsky (talk) 01:50, 10 May 2025 (UTC)[reply]

Steiner's calculus problem (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Not notable! A slightly interesting Calculus I problem, with a single MathWorld citation (which has a penchant for neologisms). --Bumpf said this! ooh clicky clicky! [insert witty meta-text on wiki-sigs here] 19:31, 2 May 2025 (UTC)[reply]

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.
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 06:37, 8 May 2025 (UTC)[reply]

Kunerth's algorithm (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Reason

The first reason I believe the page should be removed is non-notability. There are only two non-forum references I can find not written by the Wikipedia article's creator and main contributor about Kunerth's algorithm. (Both references are listed in the Wikipedia article.) The first is the original 1878 paper by Kunerth[1]. It is written in German, a language neither me nor the article's creator can read (as they admitted in the talk page). The second reference is a 1920 textbook[2]. The reference to Kunerth's algorithm in the textbook is fairly short (shorter than the body of the article), and is mostly just a restatement and very terse summary of Kunerth's original paper, with no proofs. In my opinion, an algorithm that finds modular square roots isn't notable on its own anymore because there already multiple, well known algorithms the solve the modular square root problem. (There are four Wikipedia articles on different algorithms that solve the problem.) Admittedly, the claim that doesn't need to be factored is different from the other algorithms, and may warrant notability. However, the 1920 textbook directly contradicts this claim (it states that must be prime). So, there seems to be only two relevant references to Kunerth's algorithm, one written in a language neither I nor the article's creator can read, and the other which directly contradicts one of the main claims in the article.

The second reason I'm nominating this Wikipedia page for deletion is because the most of the page is incomprehensible, low quality, and probably not correct. The algorithm as written does not work. There are many variables that aren't defined. (For example, what are and ?). As noted before me on the talk page, it seems like can be anything. There is no indication as to how the algorithm works when a square root doesn't exist (i.e., if there are no solutions to the congruence ). There is no attempt at a proof of correctness, or even an attempt to explain why the algorithm works. While the main contributor has posted many examples of Mathematica I/O (input/output) on the talk page, there seems to be no code (pseduo or otherwise) that actually implements the algorithm in general. Two other user before me also had concerns about the algorithm presented in the article, and in neither case, were these concerns resolved by the article's main contributor.

Most of the concerns addressed in the previous paragraph could theoretically be addressed and fixed. However, as stated in the first paragraph, I don't believe that Kunerth's algorithm is notable enough and too few references on the topic seems to be available. Obviously, I don't feel comfortable fixing the article unless other references on Kunerth's algorithm are found, due to the language barrier of the original paper and the lack of other English references. Regardless, the state of the current article needs to be addressed.

For more context, see the discussion I started on it's talk page: Talk:Kunerth's_algorithm#This_article_should_be_deleted. Also, here is another user attempting to understand the algorithm presented directly on the main contributor's talk page: User_talk:Endo999#A_question_about_Kunerth’s_algorithm_on_how_to_get_several_square_root_for_the_same_square….

Also, as a disclaimer. I'm not an active Wikipedia contributor, so I welcome any feedback about my approach to nominating an article for deletion. byhill (talk) 04:33, 1 May 2025 (UTC)[reply]

References

  1. ^ Adolf Kunerth, "Sitzungsberichte. Academie Der Wissenschaften" vol 78(2), 1878, p 327-346, url="https://pdfhost.io/v/~OwxzpPNA_KUNERTH_1878" retrieved="30/05/2025"
  2. ^ Leonard Eugene Dickson, "History of Numbers", vol 2, pp. 383–384.
  • The article is noteable as it has two pages devoted to it in the 1920 History of Numbers by Leonard Dickson, who was the premiere American mathematician between 1900 and 1950. Saying that Dickson's reference is 100 years old is like saying that Dante wrote in 1300 and his thought does not reflect Catholic church dogma. It does and so similarly is Dickson's expertise in Number theory (1920) to be respected. Endo999 (talk) 04:48, 1 May 2025 (UTC)[reply]
    The Kunerth modular square root algorithm is notable as it is the only one I know of that manages to find the square root of a number without factoring the
    modulus. For that alone it is notable. The algorithm substitutes the requirement that a quadratic equation must be solved for the need to factor the modulus. It can do this for modula that cannot be factored. Endo999 (talk) 15:42, 1 May 2025 (UTC)[reply]
    The Dickson source talks only about prime moduli. If you know that the modulus is prime you know its prime factorization. So there is no avoidance of factoring. —David Eppstein (talk) 16:25, 1 May 2025 (UTC)[reply]
    I don't how you come to the conclusion that does not need to be factored. Dickson contradicts this claim. While I can't read Kunerth's paper due to language barriers, all the examples in the paper use prime moduli. The claim that doesn't need to be factored needs to be backed up.
    Additionally, the integer factorization problem is equivalent to finding modular square roots [16]. So if Kunerth's algorithm doesn't require to be factored, then it must solve an equally difficult problem. byhill (talk) 16:38, 1 May 2025 (UTC)[reply]
    Kunerth's method does not require factorisation of the modulus. I've tested this on the TALK page where I factor 5 for the modulus
    1+RSA260^4+18*RSA260^2, a modulus that cannot be factored by current means. Endo999 (talk) 20:01, 1 May 2025 (UTC)[reply]
    [[17]]. In fact Kunerth's method can take the modular square root of 5 for any modulus of the formula 1+x^4+18*x^2. Endo999 (talk) 20:04, 1 May 2025 (UTC)[reply]
    Your comment here is further evidence that this article is in irrecoverable violation of WP:OR and WP:V. --JBL (talk) 20:13, 1 May 2025 (UTC)[reply]
    Is this original research or just agile use of the existing modular square root algorithm. Endo999 (talk) 20:48, 1 May 2025 (UTC)[reply]
    So agile that no one else can see how it relates to anything in any reliable source .... --JBL (talk) 22:22, 1 May 2025 (UTC)[reply]
    • Those pages of Dickson are readable here: [18]. Reading them, it becomes obvious that Kunerth's work is primarily about finding integer solutions to the quadratic equation . Modular square roots, for prime moduli only, are mentioned in one paragraph as a special case of this method for and modulus . It does not really support the case made by our article that something called "Kunerth's algorithm" is a general method for finding modular square roots, and having a single secondary source on this method (whatever the method actually is determined to be) is not enough for WP:GNG-based notability. —David Eppstein (talk) 05:43, 1 May 2025 (UTC)[reply]
  • Note: This discussion has been included in the list of Mathematics-related deletion discussions. –LaundryPizza03 (d) 08:41, 1 May 2025 (UTC)[reply]
  • Delete, per byhill and Eppstein. Also, looking on the talk page of the article, it appears, that the editor wrote a computer implementation, made some tests, and tried to (poorly) describe their implementation in this article. This is WP:Original research, and does not belong to Wikipedia. D.Lazard (talk) 08:47, 1 May 2025 (UTC)[reply]
  • Delete per the compelling nomination; this article appears to be an unintentional hoax. --JBL (talk) 17:21, 1 May 2025 (UTC)[reply]
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.
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 04:56, 10 May 2025 (UTC)[reply]

Carlos Gustavo Rosado Muñoz (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Doesn't seem notable, very weak sourcing with only one source. SparklingBlueMoon (talk) 14:57, 29 April 2025 (UTC)[reply]

Since he died in 2013, BLP would no longer apply. Liz Read! Talk! 00:37, 6 May 2025 (UTC)[reply]
Relisted to generate a more thorough discussion and clearer consensus.
Please add new comments below this notice. Thanks, Ambrosiawater (talk) 03:31, 7 May 2025 (UTC)[reply]
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.
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 keep‎. Eddie891 Talk Work 05:47, 7 May 2025 (UTC)[reply]

Table of polyhedron dihedral angles (edit | talk | history | protect | delete | links | watch | logs | views) – (View AfD | edits since nomination)
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Even though many sources support the angle of each polyhedron, I still have no clue what's the point of its existence. Dedhert.Jr (talk) 02:11, 23 April 2025 (UTC)[reply]

Don’t delete this article

This article is useful 2406:B400:71:B341:E821:9E94:FF91:A0F2 (talk) 14:45, 29 April 2025 (UTC)[reply]

Relisted to generate a more thorough discussion and clearer consensus.
Please add new comments below this notice. Thanks, plicit 04:06, 30 April 2025 (UTC)[reply]
  • weak keep by default, because this is a bit of a non-debate. The fact that one editor doesn't see the point of an article isn't really grounds for deletion, and the fact that someone else finds it possibly useful isn't strong grounds to keep. My feeling is that the list is apparently correct and sourced, and it's quite possible that some school kid somewhere is making polyhedron models and excited by their angles, so for the sake of them, I'm fine about the table existing in their favourite encyclopedia. Elemimele (talk) 09:53, 30 April 2025 (UTC)[reply]
    @Elemimele If that's the case, I could barely remodel the list anytime soon. What class of polyhedra should be included in the article? And why Platonic solids, star solids, and uniform solids are included only? Catalan solids has its own list alongside with dihedral angle. Archimedean solids? Johnson solids? Dedhert.Jr (talk) 13:59, 30 April 2025 (UTC)[reply]
    Dedhert.Jr valid point: some of the main articles already tabulate dihedral angles, but others don't. The Catalan solids article does it super-clearly. I think I'd have to downgrade my weak keep to a very weak keep on the grounds that the main articles often do have the data. This is one of those deletions where I don't feel strongly enough to argue, particularly as you have much greater knowledge of the field than I. I'm a bit inclusionist when it comes to information, and don't mind lists that duplicate-and-collate numbers also available in other lists/articles, but others may feel differently. Elemimele (talk) 16:53, 30 April 2025 (UTC)[reply]
  • Keep but consider at least mentioning the Dehn invariant as motivation, if not reworking/extending to a table of polyhedron Dehn invariants.
    Tables of dihedral angles for polyhedra are available from multiple sources, which goes some way towards meeting WP:NLIST. In particular, a quick WP:BEFORE search found the following two books:
    • Pugh, Anthony (1976). Polyhedra: A Visual Approach. Berkeley, CA: University of California Press. ISBN 9780520322042.
    • Pearce, Peter; Pearce, Susan (1978). Polyhedra Primer. New York: Van Nostrand Reinhold. ISBN 9780442264963.
The existing article also answers the specific issue of What class of polyhedra should be included in the article?: the class of edge-transitive polyhedra, as polyhedra with non-equivalent edges will typically (though not always) have multiple distinct dihedral angles. Pugh (1976) tabulates dihedral angles for the Platonic polyhedra (Table 1.34), Archimedean polyhedra (Table 2.15), some facially regular prisms and antiprisms (Table 2.16), as well as their duals (Tables 4.12 and 4.13). Similarly, Pearce and Pearce (1978) tabulates dihedral angles for the Platonic polyhedra (Regular Polyhedra), Archimedean polyhedra (Semiregular Polyhedra), quasiregular polyhedra, and Catalan solids (Duals of the Semiregular Polyhedra). Out of the 13 Archimedean polyhedra, only the cuboctahedron and icosidodecahedron have uniform dihedral angles (in fact, they're isotoxal, hence are already included in the current article).
I am sympathetic to the nominator's argument that the current article provides no good rationale for why it might be useful to tabulate dihedral angles, making it seem like an indiscriminate collection of unexplained statistics (WP:NOTSTATS). In my view, the main reason why anyone would be interested in comparing dihedral angles between polyhedra is via the theory of equidecomposability initially developed to answer Hilbert's third problem: a set of polyhedra is scissors-congruent to another set of polyhedra if they have the same volume and Dehn invariant. The Dehn invariant of a polyhedron is a function of its edge lengths and dihedral angles: Dehn invariant#Examples lists dihedral angles for the five Platonic solids, using these to calculate their Dehn invariants, as well as listing Dehn invariants (without derivation) for ten of the thirteen Archimedean solids. The MathWorld page Polyhedron Dissection tabulates Dehn invariants and volumes for sets of unit equilateral polyhedra which are interdissectable; it has a somewhat different inclusion criterion for polyhedra (interdissectability rather than isotoxality), but perhaps lends further weight to the argument that a more useful framing for this WP article might be in terms of dissection invariants for polyhedra.
If we decided to move to this framing, expanding the scope of the article from isotoxal polyhedra to the full set covered by Pugh (1976) or Pearce and Pearce (1978) might be worth considering. One caveat is that Conway, J. H.; Radin, C.; Sadun, L. (1999), "On angles whose squared trigonometric functions are rational", Discrete and Computational Geometry, 22 (3): 321–332, arXiv:math-ph/9812019, doi:10.1007/PL00009463, MR 1706614, S2CID 563915, Table 3, p. 331. only covers Dehn invariants for the non-snub Archimedean polyhedra of edge lengths 1, so we might need to dig up another reference to cover the rest of these polyhedra.
A less dramatic change (that might be less disruptive / work better in practice) might be to keep the current scope but mention the Dehn invariant as motivation. E.g. the supplementary dihedral angles of tetrahedra and octahedra explain why it's possible to fill space with them (as the tetrahedral-octahedral honeycomb). I'd be keen to hear others' thoughts on these suggestions. Preimage (talk) 16:03, 2 May 2025 (UTC)[reply]
Interesting. I retract my nomination for now. Dedhert.Jr (talk) 10:47, 3 May 2025 (UTC)[reply]
Keep I was going to write a thing but everything I would have said is subsumed by Preimage's compelling comment. --JBL (talk) 17:56, 2 May 2025 (UTC)[reply]
Keep - Although I wasn't able to fully follow them, Preimage gave very good reasons. Itzcuauhtli11 (talk) 01:18, 7 May 2025 (UTC)[reply]
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.

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