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17 votes
1 answer
564 views

OpenAI and MathOverflow?

The agreement between SO and OpenAI seems to have resulted some ill humour. Does MO plan to follow?
5 votes
1 answer
116 views

Is something wrong with the citation helper?

I've found the citation helper very useful for inserting references in posts, and I always used to be very impressed at its ability to find details of even some quite obscure papers. But recently it ...
51 votes
54 answers
29k views

News of potential interest to the MO community

Occasionally, there has been a suggestion to start a meta question to collect information that might be of interest to the MO community. This is an attempt to start such a thread. Is there any news ...
13 votes
1 answer
588 views

Can we get rid of the "featured on meta" main meta links?

As you know, MathOverflow has a special status in the Stack Exchange family, and (by a special agreement) it doesn't display any kind of ads nor links to the hot network questions in the sidebar. ...
-5 votes
0 answers
126 views

Please, reopen my old question, I now have the answer

I want to answer my old closed question myself. Is there a formula or algorithm to remove infinitesimal and oscillating parts from an expression while keeping finite and infinite ones?
39 votes
1 answer
852 views

MO answer formalized in Lean

I have formalized an answer at Homeomorphisms and "mod finite" by @VilleSalo, in a moderately-sized Lean file. Outcome: his claims turned out to be 100% accurate. (The only stumbling block ...
0 votes
1 answer
64 views

What tags are appropriate for a "reverse" reference request?

I have a just asked a question, searching for information on a reference, but I'm not sure what tags to use. I know the reference, although I know no further details about it. A similar question ...
2 votes
0 answers
103 views

Announcement: A stacks project for category theory

I'm releasing today The Clowder Project, a tag-based wiki and reference for category theory powered by Gerby. I plan to eventually make it into a comprehensive resource for category theory, in the ...
19 votes
2 answers
724 views

More spam bots than usual?

Has anyone noticed the site getting a lot more spam posts than usual over the past couple days? The ones I've seen repeatedly have "BingX referral codes" or similar codes for Bitcoin or ...
-5 votes
0 answers
299 views

Is something objectionable about this question?

Reference request: Expository paper on the use of functional analysis in differential and integral equations Nobody's said a word about this question, but somebody down-voted it. They didn't explain ...
0 votes
1 answer
158 views

Are questions about whether a type of work/problem/solution or (one's own) arxiv paper is publishable on topic?

This is a bit related to the question: Are "has this been studied before" questions on topic? If I post something in the arxiv, can I ask for an opinion as to whether: 1) it's been done ...
4 votes
0 answers
103 views

Discrepancy between MathOverflow logo and this site's logo

There is a slight difference between the sizes of the boxes in the MO logo and the Meta.MO logo. The MO logo's box is slightly longer and the gap in the rightmost side is slightly less tall. The ...
4 votes
0 answers
215 views

A mathjax issue with stars in super/subscripts

I encountered Topos associated to a category with glowing-red \*s in it. When trying to edit them out I discovered that whenever I try to replace an ...
6 votes
5 answers
1k views

Formatting Sandbox

The purpose of this thread is to enable people to check if their formatting works and to play around with their MathJax code. Quoting from Bill Dubuque's Formatting Sandbox on meta.math.SE: To use ...
5 votes
1 answer
269 views

Long display style formulae extend too much to the right with some renderers

In the following screen capture, take a look at the region delimited by the red rectangle: notice how it extends too much to the right, such that a part of it becomes hidden by the yellow page element....
15 votes
1 answer
751 views

Are "has this been studied before" questions on topic?

I have a fairly elementary question but rather than feeding it straight to the wolves I thought I would ask it here. Well, via a more general question: Are questions of the form "has $X$ been ...
8 votes
1 answer
559 views

MathOverflow answers and peer review

Sometimes, the asker does not have sufficient background to verify an answer. How should one handle such cases? Some of the signals on whether to accept such an answer are whether it 'looks' good, ...
11 votes
2 answers
668 views

Streamlined tagging for Mochizuki

For better or worse, there is a number of questions at MO on Mochizuki's stuff. I noticed that some of the questions have the tag "abc-conjecture" while others don't have this tag. Should ...
7 votes
7 answers
2k views

Specialized chat rooms

Would there be an interest in having more specialized chat rooms, like the one for homotopy theory that currently exists? So far, the homotopy theory one seems to be fairly successful, and it seems ...
26 votes
26 answers
3k views

Help cleanup tags!

This is meant to agglomerate tags that need (occasional or regular) cleanup. That is tags that mean multiple unrelated things and need to be separated into more specific tags. Please follow the ...
2 votes
2 answers
240 views

All these invalid weblinks

I found so many web links became invalid on the questions and even more on the comments. Please be aware of this issue. In the future, this site needs to either repair the invalid links or advise ...
1 vote
1 answer
75 views

Ordered rings tag

I've noticed that while there are tags ordered-groups and ordered-fields, there is no tag ordered-rings. The issue is that there was a little amount of questions with this tag. So it got deleted. I ...
0 votes
0 answers
169 views

Incentivizing ‘bad’ questions

As a 5+ year member of MO, I remember the old days when upvotes on questions only netted you 5 points as opposed to the current 10. While I was generally glad to see good questions being rewarded in a ...
15 votes
1 answer
425 views

Is it fine to repost questions from a paper

Is it fine to re-ask open questions from ones paper on mathoverflow? On the one hand, I am interested in finding an answer to the question, and it might help if it is more publicly available. But if I ...
50 votes
0 answers
804 views

How do we fit in with Stack Exchange’s new AI agreement with Google?

Stack Exchange has some kind of new AI agreement with Google, as announced in their blog. I’m just trying to get caught up myself here on what exactly is going on, but one real possibility is that ...
7 votes
2 answers
530 views

Systematic downvoting

In the past 7 days, I have received 9 downvotes (on questions that have been otherwise positively received). I suspect someone is systematically downvoting, but doing so with a large enough interval ...
1 vote
1 answer
325 views

Could MO use a minus sign for negative numbers?

I just noticed that negative vote totals are recorded with a hyphen: In general within the StackExchange network it's probably not worth fussing over, but, here on MO, maybe we could use a minus sign ...
4 votes
0 answers
152 views

Why doesn't the prime in $\sum_n'$ sit flush against the summation symbol?

The TeX snippets $\sum_n'$ \sum_n' and $\sum_n^\prime$ \sum_n^\prime should (as with all things TeX, barring trickery) be ...
15 votes
1 answer
553 views

Request to consider undeleting an answer

Apologies if this should go in the "requests to undelete questions" thread but this seems to be technically different. I noticed that this answer https://mathoverflow.net/a/465960/ has ...
-6 votes
1 answer
261 views

Why can't I post a question?

I'm not good at expressing myself and need research level math help, to assist my research in mathematics, to help the community. Please let me express myself here as I am just trying to get ...
38 votes
4 answers
2k views

Most important results of the year - appropriate or not?

The question Most important results in 2023 has been posted to MO, and as in previous years, has had a mixed reception. (EDIT: As of this writing, the post has been deleted by the author, presumably ...
0 votes
1 answer
219 views

Inconsistency in MO votes

Yesterday I sent this question to a friend of mine. He told me he upvoted my question. When I go to my notifications, I don't see the vote. But when I go to the history of my question, it can be seen ...
5 votes
0 answers
75 views

Missing brackets in $\{x\}$ in drafts, not missing in the final question/product

I am using the latest version of Firefox on Linux (bodhi linux) as well as Mac and Windows. Some $\LaTeX$ is not typeset correctly in MathOverflow: whenever I type a set, like the singleton $\{x\}$, ...
9 votes
2 answers
713 views

`\intertext` in MathJax

MathJax, at least as used on MO, recognises many multi-line environments, like {multline}, {align}, and ...
2 votes
0 answers
218 views

Facebook and Twitter links disappear ungracefully

I am using Safari 16.1 on macOS 12.6. The invitation to "Share a link to this question" appears for me like this: I assume that the Twitter and Facebook links are not showing because of ...
1 vote
2 answers
337 views

Why was my spam flag declined on an answer that does nothing but promote the answerer's book?

I recently encountered an answer that does nothing but refer to the poster's book: Please look pages 141-147 of the book: S. Saitoh and Y. Sawano, Theory of Reproducing Kernels and Applications, ...
3 votes
0 answers
77 views

Including a hash character (#) in a math equation causes it to not render (in new-question page)

I want to ask a question about a paper that uses this notation: However, when I typeset it in MathJax with ...
15 votes
2 answers
824 views

Suggestions for the design of a font for math articles/books

Recently I've resumed work on a font I'm currently developing, meant to be released as a completely free, open-source, OFL-licensed font designed specifically for use in papers, theses, books, lecture ...
8 votes
1 answer
297 views

Should there be a banner with some basic info about MO in the right sidebar?

A recent discussion about customizing the "Draft your question" panel reminded me of an older one here: Feature request: add short "about MathOverflow" section to the front page. ...
19 votes
1 answer
823 views

Using mathoverflow as a blog

In the past, I’ve seen instances where a user has been accused of ‘using mathoverflow as a blog’; the specific criteria for when this accusation is leveled vary, but generally the following are ...
4 votes
1 answer
209 views

A MathJax/LaTeX question

In This question, the following appears: $$[0,2] \times \left[0,4-\sqrt{3}\right] \times \left[0,4-\sqrt{3}\right] \times \mathop{\Large\times}_{i=1}^{k-3}[0,2]$$ Thinking that that last $\times$ ...
7 votes
2 answers
127 views

Is there a way to download all your contributions?

Suppose I want to download all my questions and answers, e.g., as separate latex files. Is there a way to do this automatically? For example, this can be done on Facebook and on Google. There are many ...
13 votes
2 answers
760 views

Is there a way to measure the effectiveness of MO?

One way to measure the effectiveness of MO is to track how often it leads to publishable research. That angle has been discussed before. I'm wondering if there are other metrics that can be used to ...
2 votes
1 answer
106 views

Is there a way to see the up/down vote spread on all questions asked by a given user?

When you as a user get some sufficiently high reputation, you can see the up/down vote spread of any question/answer. Now suppose there's some user, X, you're interested in. On their page you can sort ...
4 votes
0 answers
81 views

Blocking things from feed

Is it possible to block certain users or tags from appearing on one’s personal feed?
9 votes
0 answers
209 views

2023: a year in moderation

It’s that time of the year again! As we wave goodbye to last year and welcome the new one, we have a tradition of sharing moderation stats for the preceding calendar year. As most of you here might be ...
2 votes
1 answer
49 views

MathJax ignores a `\tag` in an `{equation}` containing a `{split}`

The following snippet, when compiled as part of a LaTeX document with appropriate packages loaded, would produce a numbered (well, \tagged) equation: ...
4 votes
2 answers
227 views

How often are questions "successfully" migrated to MSE?

I rarely use MSE and so I don't have a good feel for what it's like overall. I was slightly surprised by a recent comment by Christian Remling which characterizes MSE as a "homework factory with ...
5 votes
2 answers
136 views

In the MathOverflow data, can you determine the number of hours you've spent on MathOverflow?

In your profile, you can find a list of all your questions, answers, and comments, and also how many total days you've been logged into MathOverflow. Is there also a way to determine the total number ...
2 votes
0 answers
70 views

Should community wiki answers be eligible for bounties?

I posted an answer to this question Kepler conjecture: Are there only two most efficient packings or could there be more than two? summarizing various points made in the comments into a coherent ...

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