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2021 Moderator Election Q&A – Question Collection
11 votes

The CURED chatroom is extremely active and plays a large role in closing and deleting questions and answers, among other moderation activities. Are you aware of this chatroom? Do you think this ...

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Is it alright to have a question on Math Stack Exchange that simply asks the name of a theorem?
3 votes

I think such a question needs to justify its existence by stating why it is expected a name exists. If it does this, then it should be OK. The issue is that most theorems (and almost all lemmas) do ...

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Should “specific-user” tag not be removed from Meta?
6 votes

I don't think the tag should be removed. It is useful for questions asking about the actions of a specific user, and how the community (and not "specific users") should or can respond. Such ...

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Should I thank people when they post comments?
Accepted answer
5 votes

No, you shouldn't thank each of them with an individual comment. This is because if, as you say, there are 5 people who helped you then you would be posting 5 comments, which is a lot of noise. You ...

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$\pi + e$ is irrational, I want to share but nervous.
66 votes

No, this is not the correct place to post your solution. At best this looks like self-righteous advertising, at worst spam. There are a few caveats and points for discussion here though. This is a Q&...

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doubt regarding what kind of question can be asked on MSE
1 votes

It depends how you ask it. This is true of every type of question*, but it is easy to forget about when asking for a book recommendation. Simply asking "what is the best book to learn algebra ...

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How to properly align a fitch style proof on Math Exchange?
24 votes

Another option is to use the align environment \begin{align*}...\end{align*}, rather than the array environment. This environment has more flexibility with spacing, which is useful if you don't want ...

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Issue with vertical positioning of text with numbers
Accepted answer
3 votes

The typeface used in posts at Math.SE is Georgia. Maths is done via MathJax, and here the specific typeface used is complicated (it seems like it can change from machine to machine, but really I don't ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
1 votes

Reopened and Undeleted, Closed again, Deleted, Undeleted, Deleted again I think the following question should be reopened: What Are The Elements of $e$ in Set Theory? It is an intriguing question ...

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Should I comment an old question or create a new one?
Accepted answer
10 votes

If your issue/confusion can be summarised in only a few lines, and if the author of the original answer is still active, then it is often better to first leave a comment on the relevant answer and ...

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How do I get answers involving conceptual discussion instead of solutions?
Accepted answer
12 votes

If you are looking for a general method or asking about something more conceptual then say so clearly in the body of the question. Instead of stating a specific instance of your general problem and ...

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Answer to a short question that was already answered in comments
8 votes

An answer should answer the question, and so the comment from review is correct: "This does not provide an answer to the question. To critique or request clarification from an author, leave a ...

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2020 Moderator Election Q&A - Question Collection
21 votes

This question is inspired by this meta question. The CURED chatroom (formerly CRUDE) is extremely active and plays a large role in closing and deleting questions and answers. Are you aware of this ...

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Is it no longer considered OK to post a comment of more than 600 characters as an answer?
21 votes

In the spirit of the question: This started life as more of an extended comment than an answer. I think it has morphed into an answer now though. Math.SE seems to be based around the idea that every ...

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Request for Hyperbolic $ \sech \,x $ inclusion in MathJax
Accepted answer
3 votes

To make my comments into an answer: Firstly, you can define it manually, so \operatorname{sech}(x) renders as $\operatorname{sech}(x)$. A more fancy way is to put \DeclareMathOperator{\sech}{sech} ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
2 votes

Reopened Please consider voting to reopen this question: Peak response of second order system with rectangular pulse input The OP has improved it a lot.

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
2 votes

Undeleted The following answer was deleted: https://math.stackexchange.com/a/1409573/10513 and I believe it should be undeleted. The question is rather old (2013). The context of the question is ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
0 votes

Reopened Please consider reopening the question: Theorems with the greatest impact on group theory as a whole (note that the question is about infinite group theory). It is currently closed as "...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
1 votes

Undeleted Please consider undeleting the question: Intersection of Normal closure and Center The OP deleted question after answer was given.

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
0 votes

Can this answer (on permutation groups) be undeleted: https://math.stackexchange.com/a/3197094/10513 It was deleted for not providing an answer to the question. However, it gives a decent hint which ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
1 votes

Reopened This question was closed as "unclear what your asking": Show that the order of an element g is well-defined The issue and its resolution can be seen in the comments to the thread. A brief ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
7 votes

Reopened This meta question has been closed as a duplicate: Can we please STOP closing and deleting old posts with answers? However, it is not a duplicate. The older question is about deleting ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
4 votes

Reopened I would like to see this question opened: Intersection of a nested sequence of subgroups The OP has provided all the context requested in the comments. Also, it is an interesting and ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
2 votes

Undeleted and merged with duplicate I would like to see the question "Finding sum to infinity" undeleted. The OP says that they "tried using the Taylor series for $e^x$ but couldn’t figure out how to ...

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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
3 votes

Reopened, then closed as duplicate. It would be useful if this question can be reopened, so that it can be closed as a duplicate (see comments to post for more details).

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Is it okay to re-ask a deleted question?
13 votes

I think you should wait a week, then re-ask the question. If you are going to re-ask a deleted question then you have to remember that it was closed for a reason. If a question is no-effort and no-...

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Are my questions too niche or simply bad? How to improve attention to my questions?
Accepted answer
17 votes

Possibly your issue is with the tags. Often users will "follow" only a few tags. When you ask a question you need to choose the tags wisely so that the correct people will see your question; that is, ...

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Requests for Reopen & Undeletion Votes, etc. (volume 01/2015 - 07/2018 )
-3 votes

Undeleted I feel that the following question should be undeleted and reopened: Can a countably infinite torsion group exist in which the density of squares is double the density of non-squares? It ...

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Requests for Reopen & Undeletion Votes, etc. (volume 01/2015 - 07/2018 )
0 votes

Reopened I am requesting that this question be reopened: Why is group theory axiomatized with operations? I believe that the reason for closure is tied up in the first comment, which basically says "...

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Requests for Reopen & Undeletion Votes, etc. (volume 01/2015 - 07/2018 )
0 votes

Reopened and then merged with an older question (revisions/timeline) I think this question should be reopened: Polynomial equation $f(x)f(2x^2)=f(2x^3+x)$ For starters, the question was open for 2 ...

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