Francesco Cattafi

Welcome! (We can't say that loudly enough!)

Hello, Francesco Cattafi, and welcome to Wikipedia! I hope you like the place and decide to stay. Here are some pages you might find helpful:

• Be Bold!
• Learn from others
• Be kind to others
• Contribute, Contribute, Contribute!
• Tell us a bit about yourself
• Our great guide to Wikipedia

If you have any questions or problems, no matter what they are, leave me a message on my talk page. Or, please come to the new contributors' help page, where experienced Wikipedians can answer any queries you have! Or, you can just type {{Help me}} on your user talk page, and someone will show up shortly to answer your questions.

Please sign your name on talk pages and votes by typing four tildes (~~~~); our software automatically converts it to your username and the date. We're so glad you're here! Meatsgains^(talk) 01:16, 4 February 2020 (UTC)

Tip of the day...

World of fiction

Our culture is full of fiction, entire fictional universes inhabited by millions of fictional characters. Wikipedia is an encyclopedia that seeks to describe facts and opinions about reality. When writing about fiction, please be sure to establish the necessary context for the reader, so that it is clear that the article describes a fictional entity from a specific work. It is also often a good idea to combine many minor fictional characters or places into a single article about the fictional realm in question, especially when there is only a very limited amount that could be said about each of them.

Prior tip – Tips library – Next tip

Read more:

WP:Check your fiction  

WP:Avoid writing "in universe"  

Become a Wikipedia tipster

To add this auto-updating template to your user page, use {{totd}}

The Strauss Dynasty moved to draftspace

An article you recently created, The Strauss Dynasty, is not suitable as written to remain published. It needs more citations from reliable, independent sources. (?) Information that can't be referenced should be removed (verifiability is of central importance on Wikipedia). I've moved your draft to draftspace (with a prefix of "Draft:" before the article title) where you can incubate the article with minimal disruption. When you feel the article meets Wikipedia's general notability guideline and thus is ready for mainspace, please click on the "Submit your draft for review!" button at the top of the page. scope_creep^Talk 20:42, 10 November 2021 (UTC)

ArbCom 2021 Elections voter message

Hello! Voting in the 2021 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 6 December 2021. All eligible users are allowed to vote. Users with alternate accounts may only vote once. The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail. If you wish to participate in the 2021 election, please review the candidates and submit your choices on the voting page. If you no longer wish to receive these messages, you may add {{NoACEMM}} to your user talk page. MediaWiki message delivery (talk) 00:55, 23 November 2021 (UTC)

Articles you might like to edit, from SuggestBot

SuggestBot predicts that you will enjoy editing some of these articles. Have fun!

Views/Day	Quality	Title	Tagged with…
259		Archduchess Elisabeth Marie of Austria (talk)	Add sources
9		Greg Prange (talk)	Add sources
5		Louis J. Battan (talk)	Add sources
19		Library Network of Western Switzerland (talk)	Add sources
13		Glossary of differential geometry and topology (talk)	Add sources
8		Georges Reeb (talk)	Add sources
218		Baroness Mary Vetsera (talk)	Cleanup
6		Variational bicomplex (talk)	Cleanup
66		Order of Saint Stephen of Hungary (talk)	Cleanup
4		Marinka (operetta) (talk)	Expand
19		Geometric mechanics (talk)	Expand
35		Local diffeomorphism (talk)	Expand
50		Closed manifold (talk)	Unencyclopaedic
156		Nibelung (talk)	Unencyclopaedic
13		Tutti pazzi per amore (talk)	Unencyclopaedic
18		Analytic manifold (talk)	Merge
309		Differentiable manifold (talk)	Merge
37		Étale morphism (talk)	Merge
6		José Quaglio (talk)	Wikify
21		Ducal Crypt, Vienna (talk)	Wikify
465		Ludwig III of Bavaria (talk)	Wikify
7		Sophie Esterházy (talk)	Orphan
2		Richard Kerner (talk)	Orphan
2		Johanna Wolf (brothel owner) (talk)	Orphan
5		Walther Reyer (talk)	Stub
3		Anton Profes (talk)	Stub
28		Mayerling (1936 film) (talk)	Stub
3		Pierre Macq (talk)	Stub
4		My Heart Is Calling You (talk)	Stub
11		Thom–Mather stratified space (talk)	Stub

Note: All columns in this table are sortable, allowing you to rearrange the table so the articles most interesting to you are shown at the top. All images have mouse-over popups with more information. For more information about the columns and categories, please consult the documentation and please get in touch on SuggestBot's talk page with any questions you might have.

SuggestBot picks articles in a number of ways based on other articles you've edited, including straight text similarity, following wikilinks, and matching your editing patterns against those of other Wikipedians. It tries to recommend only articles that other Wikipedians have marked as needing work. Your contributions make Wikipedia better — thanks for helping.

If you have feedback on how to make SuggestBot better, please tell me on SuggestBot's talk page. Thanks from Nettrom (talk), SuggestBot's caretaker. -- SuggestBot (talk) 21:17, 20 March 2022 (UTC)

Harish-Chandra's proof of Lie's third theorem

Hi,

About your recent addition of remarks on proofs of Lie's third theorem (which are very nice). If I remember correct, I heard that there was a proof of the theorem by Harish-Chandra. Do you know anything about it? Is it one of the three mentioned in the article? (I did a quick Google search but couldn't find anything so maybe my memory was wrong.) Taku (talk) 08:16, 19 September 2022 (UTC)

Hi, thanks for the question! Unfortunately I have never heard about such proof, but after a bit of searching online I found these notes, https://math.mit.edu/~ngtriant/notes/ados_theorem.pdf, where they mention that Harish-Chandra actually provided in 1949 a proof not of Lie's third theorem but of Ado's theorem. Indeed, I just read now that in the page Ado's theorem they mention his paper among the references. Unfortunately they don't mention anything else about the actual proof(s) of the result, and I have actually never read it myself so I wouldn't be able to improve that article (but it would be nice if someone else could!) Francesco Cattafi (talk) 16:36, 25 September 2022 (UTC)

First my apology for the late response. Second, thank you for doing some digging in history. After reading your response, I do now think I misremember; it was Ado's history not Lie's third theorem (though, of course, they are closely related). In any case, the right place to mention Harish-Chandra's proof is therefore at the Ado's theorem article. If I can find time, I will try to read Harish-Chandra's proof and see if it differs from the standard one (and edit the article accordingly). Anyway thank you again for the response. -- Taku (talk) 09:00, 18 November 2022 (UTC)

ArbCom 2022 Elections voter message

Hello! Voting in the 2022 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 12 December 2022. All eligible users are allowed to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2022 election, please review the candidates and submit your choices on the voting page. If you no longer wish to receive these messages, you may add {{NoACEMM}} to your user talk page. MediaWiki message delivery (talk) 01:35, 29 November 2022 (UTC)

Disambiguation link notification for December 1

Hi. Thank you for your recent edits. An automated process has detected that when you recently edited Italian Mathematical Union, you added a link pointing to the disambiguation page Giovanni Ricci. Such links are usually incorrect, since a disambiguation page is merely a list of unrelated topics with similar titles. (Read the FAQ • Join us at the DPL WikiProject.)

It's OK to remove this message. Also, to stop receiving these messages, follow these opt-out instructions. Thanks, DPL bot (talk) 06:05, 1 December 2022 (UTC)

Colloquium Lectures (AMS) moved to draftspace

Thanks for creating Colloquium Lectures (AMS). Unfortunately, it is not ready for publishing because it needs more sources to establish notability. Your article is now a draft where you can improve it undisturbed for a while.

Please see more information at Help:Unreviewed new page. When the article is ready for publication, please click on the "Submit your draft for review!" button at the top of the page. Reading Beans (talk) 03:15, 25 January 2023 (UTC)

Disambiguation link notification for February 12

An automated process has detected that when you recently edited Eigen Kweek, you added a link pointing to the disambiguation page La Voix du Nord.

(Opt-out instructions.) --DPL bot (talk) 06:03, 12 February 2023 (UTC)

Your JA nomination of Poisson manifold

The Poisson manifold article has been imported to v:WikiJournal Preprints/Poisson manifold (per WP:JAN). Whenever you're ready to proceed:

1. Fill in the 'article info' template at the top (often easiest in VisualEditor)
2. Fill in the authorship declaration form to submit as ready for external peer review to be organised.

Feel free to contact me with any questions or comments. T.Shafee(Evo&Evo)^talk 07:04, 10 March 2023 (UTC)

Proposed deletion of Momo (TV series)

The article Momo (TV series) has been proposed for deletion because of the following concern:

Appears to fail WP:NTV and WP:GNG. Tagged for notability since 2022. All citations are press releases, database sites, and episode lists.

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated}} notice, but please explain why in your edit summary or on the article's talk page.

Please consider improving the page to address the issues raised. Removing {{proposed deletion/dated}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and articles for deletion allows discussion to reach consensus for deletion. DonaldD23 talk to me 11:51, 26 October 2023 (UTC)

ArbCom 2023 Elections voter message

Hello! Voting in the 2023 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 11 December 2023. All eligible users are allowed to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2023 election, please review the candidates and submit your choices on the voting page. If you no longer wish to receive these messages, you may add {{NoACEMM}} to your user talk page. MediaWiki message delivery (talk) 00:48, 28 November 2023 (UTC)

Lie algebroid

Hi,

It appears that you wrote most of the article on Lie algebroids, and so perhaps you could answer a question on the talk page there. Very early in the article, it says the anchor is a derivation (Liebnitz rule) and it uses a dot product to define what this is. Based on context, it looks like some bundle metric, but I can't guess what this is, and why it is not an explicit part of the definition. (Surely, if one is going to be taking vector products, this should be an explicit part of the definition, right?) Now, this particular text predates your additions, but I figure you'd be able to answer it easily. Thanks. 67.198.37.16 (talk) 21:05, 29 May 2024 (UTC)

Never mind. I just realized the whole thing is a scalar, so this is a scalar product, not vector. Dohh. I'll edit the article to clarify this per talk page. Please review for correctness. 67.198.37.16 (talk) 21:21, 29 May 2024 (UTC)

Thanks again for the message and sorry for my late reply - I have reviewed your edit and replied in the talk page! Francesco Cattafi (talk) 13:44, 29 June 2024 (UTC)

ArbCom 2024 Elections voter message

Hello! Voting in the 2024 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 2 December 2024. All eligible users are allowed to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2024 election, please review the candidates and submit your choices on the voting page. If you no longer wish to receive these messages, you may add {{NoACEMM}} to your user talk page. MediaWiki message delivery (talk) 00:39, 19 November 2024 (UTC)