Recently Active Questions
1,909 questions
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Can I know why my post was deleted by a bot?
My question Compiling a List of Schauder Bases for Function Spaces was deleted by a bot, I want to know why.
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5
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0
answers
296
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Possible delay/review to deal with troll posts
In light of the ongoing garbage flood, I am curious whether the following would be possible to institute (and/or a good idea):
When a new/unregistered (or under-X-rep.) account posts an answer or ...
- 20.7k
4
votes
1
answer
157
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Edit summary rejected with "Comment reserved for system use. Please use an appropriate comment."
I recently tried to submit an edit to Why does an invariant measure define a Schwartzman cycle? No matter what I put in my edit summary, it was rejected with the message "Comment reserved for ...
- 12.9k
-9
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1
answer
278
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What do you think about the following MO question?
What do you think about the following MO question?
By posting this question for feedback I am following David Roberts' very patient and kind advice.
If you have already seen the question below please ...
CommunityBot
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16
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2
answers
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Users using AI to write lots of answers
Recently, there are a lot of new pseudonymous users with a peculiar pattern of posts: only answers, no questions, in lots of widely differing areas of mathematics (where it is unlikely that one random ...
CommunityBot
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16
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1
answer
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Why is the site being flooded with junk right now? What is being done about it?
Right now the site is being flooded with posts from new users, with pseudonymous names, who use a mixture of obvious AI-generated nonsense mathematics and weird sentences (sometimes borderline ...
CommunityBot
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2
answers
477
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dispute -100 rep decision
I was given -100 reputation for this sound mathematical post https://mathoverflow.net/questions/473947?noredirect=1#comment1231454_473947
This is excessive and I want to dispute this decision, how do ...
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32
votes
114
answers
13k
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Requests for reopen and undelete votes for closed and deleted questions
Since I expect this may prove rather useful, I'm blatantly purloining Asaf's question from meta.math.se.
Please post general requests for reopen votes as answers below.
Beware that "short" ...
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117
votes
23
answers
9k
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MO-Hard Questions
The term "MO-Hard" has entered the mathematical vocabulary, describing interesting questions that were asked on MathOverflow but haven't been answered in spite of efforts by many community members. ...
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4
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1
answer
436
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Option to migrate to CS Theory
We should add the option to migrate to Theoretical Computer Science when voting to close. This question is an obvious candidate.
- 101
-1
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2
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331
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Asking for consensus on mathematical conventions/definitions
Is this (mathoverflow or meta) a reasonable place to ask nuanced questions about how the mathematical community interprets mathematical terms and how they are used in common questions? For example: is ...
- 35.5k
14
votes
1
answer
10k
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KaTeX vs MathJax
According to some benchmarks, it seems that KaTeX renders latex much more faster than Mathjax.
Is there any chance to use KaTeX in place of Mathjax?
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27
votes
1
answer
1k
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OpenAI and MathOverflow?
The agreement between SO and OpenAI seems to have resulted some ill humour. Does MO plan to follow?
- 24.2k
-10
votes
1
answer
246
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User destroyed without explanations or obvious reasons
Yesterday (June 6), somebody posted this answer (now deleted, so users with <10k reputation will not see it). I have not bothered checking whether it is correct, but it surely looks reasonable, and ...
S. CarnahanMod
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12
votes
1
answer
274
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Braces don't render in preview
When I type braces in math mode in a post, like $\{1,2,3\}$, they don't show up in the preview. See the following screen shot.
I tried all the different Math ...
- 4,713
55
votes
2
answers
4k
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ChatGPT strikes MathOverflow
The user (or a bot) https://mathoverflow.net/users/496085/canvas123 appears to be posting ChatGPT-generated text on MathOverflow.
Two “answers” by this user already got accepted (!):
When is a ...
- 5,407
12
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5
answers
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When a MSE user is suspended, should the suspension apply to MO as well?
I'm just asking. When an MSE account is temporarily suspended to cool down, then the expected outcome is that the user would start doing the same things on MO which led to the MSE suspension. This ...
- 4,713
3
votes
0
answers
107
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Do lookalike characters in question titles pose any risks?
Attacks via "lookalike domains" are a known malicious trick. Is any risk posed by a lookalike question title?
I know that's rather vague, and it's a concern that seldom arises. I give an ...
- 12.9k
16
votes
1
answer
459
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New bolded tags?
The past few days, I’ve noticed that the question tags on the main site are now bolded; is there any way to revert them back to normal? (Not the end of the world, but I find it distracting more than ...
- 7,127
5
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1
answer
149
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 ...
- 35.2k
13
votes
1
answer
614
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.
...
- 20.2k
38
votes
1
answer
924
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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 ...
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0
votes
1
answer
95
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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 ...
0
votes
0
answers
160
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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 ...
- 11.8k
19
votes
2
answers
778
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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 ...
- 4,713
0
votes
1
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185
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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 ...
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4
votes
0
answers
123
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 ...
- 2,031
4
votes
0
answers
247
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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 ...
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15
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1
answer
786
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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 ...
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10
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1
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587
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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, ...
- 21.3k
11
votes
2
answers
734
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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 ...
6
votes
7
answers
2k
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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 ...
- 4,713
2
votes
2
answers
262
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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 ...
- 20.2k
1
vote
1
answer
79
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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 ...
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0
votes
0
answers
193
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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 ...
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15
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1
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452
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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 ...
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0
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859
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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 ...
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6
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2
answers
548
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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 ...
- 24.9k
0
votes
1
answer
346
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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 ...
- 12.9k
4
votes
0
answers
163
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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 ...
- 12.9k
15
votes
1
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570
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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 ...
Stefan KohlMod
- 19.6k
-6
votes
1
answer
293
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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 ...
- 35.5k
38
votes
4
answers
3k
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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 ...
- 30.3k
0
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1
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230
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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 ...
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0
answers
95
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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 $\{x\}$, ...
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9
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2
answers
889
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`\intertext` in MathJax
MathJax, at least as used on MO, recognises many multi-line environments, like {multline}, {align}, and ...
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0
answers
223
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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 ...
CommunityBot
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2
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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, ...
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3
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0
answers
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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 ...
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15
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2
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916
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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 ...
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