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2 votes
1 answer
146 views

Is it possible to find out why a comment was deleted?

I had a comment at How do you generate math figures for academic papers? asking whether the question was a duplicate. (Carlo Beenakker is responding to it in this comment.) Since the comment is no ...
  • 9,077
0 votes
0 answers
96 views

Hinting votes for CW contributions

I would like to learn about opinions about visually indicating votes for contributions to community wiki; what I have in mind is something analogous to the green button in the "menue-line" ...
  • 11.4k
4 votes
1 answer
121 views

Are my comments searchable?

My activity page in particular contains "All actions" tab; all my comments are there. Can I search for, say, a specific word there? A wonderful answer by Martin Sleziak to my question Is it ...
36 votes
3 answers
1k views

Welcoming new user: on a recent question about connections

I think that the history of this question about connections is unfortunate. I would like to discuss (respectfully, without throwing blame around) whether/how a better outcome might have been achieved....
0 votes
0 answers
58 views

Don't know the details to my old account, how can I find them?

My question is pretty much as in the title. I have an old account but no longer know which e-mail I used to set it up (never mind the password xD). Is there any way I can get the e-mail? I'm ...
  • 758
2 votes
1 answer
297 views

What if I'm not sure about what area of math a problem lies?

One student asked me how to solve a problem and the only way of solving it that came to me seems hopeless to find an answers. It occurred to me that I may using a wrong approach to it. How could I ask ...
0 votes
0 answers
124 views

Is this partial differential equation on topic for Mathoverflow?

I came across this differential equation. I'm not sure if it's research level, but I think it might be: $$u\frac{\partial}{\partial u}\left(u\frac{\partial f}{\partial u}\right) + v\frac{\partial}{\...
14 votes
0 answers
1k views

Why is the question about SO(4) embedding into SU(3) attracting so many troll answers

This question: Is SO(4) a subgroup of SU(3)? has already attracted 5 rude spam answers (most of which have been deleted by the time I posted this, but if you have enough reputation you can see them). ...
  • 19.9k
2 votes
0 answers
220 views

How do I recover my MathOverflow account?

I've been inactive for close to a year due to illness--and want to resume my activity as in Euclidean volume of the unit ball of matrices under the matrix norm but when I try to do so, I get treated ...
8 votes
1 answer
399 views

Two traffic observations and questions

The MathOverflow traffic (page views, visits, new visits) shows steady and possibly increasing activity over the last $2+$ yrs. The chart below runs from 2019-Jul-07 on the left and 2021-Nov-04 on the ...
2 votes
0 answers
96 views

Braces are not rendered in MathJax in the preview of a question

I am using Firefox 94.0.1, with no user scripts. I have a few add-ons, which I can list if needed, but, since the behaviour does not always occur, they cannot always be interfering. My renderer is <...
  • 9,077
0 votes
0 answers
236 views

"overestimates topoi" and research level

I wonder now and then, why this question is still open Did Grothendieck overestimate topoi? Usually, MO's members tend to be very strict about what is and what isn't a good question. But why is this ...
user avatar
2 votes
0 answers
341 views

A super easy way to speed up MathJax loading with LocalCDN add-on

I found a very neat way to speed up MathJax execution times and I thought about sharing it with everyone here. Typically whenever I start my browser I have to load up all of these MathJax resources ...
1 vote
1 answer
197 views

Why I am not allowed to answer protected questions?

I'm a new user of MathOverflow. In the privileges section, it says that I can now answer protected question. But in reality, when I visited this protected question, it says: I'm not counting the ...
user avatar
14 votes
0 answers
588 views

To which extent can one modify another's question?

One highly off-topic question of real analysis was asked in the main site by a new user. One user sent, 1 hour later, a long answer going far beyond the the question, and then, 12 hours later, edited ...
  • 54k
2 votes
1 answer
168 views

I can not find one question I have already asked

I had already asked a question as follows: "Is there a one dimensional foliation of a two dimensional manifold whose foliation groupoid is diffeomorphic to a 3 sphere with two north pole. The ...
3 votes
1 answer
234 views

Finding previously highly active deleted users

I was fairly active on MO at the start. Then, as is the case with some early users, my participation became much more sporadic over the years. Recently, I realized that quite a few of the old accounts ...
  • 29.9k
4 votes
0 answers
293 views

Criteria for Top question?

I posed a question on Mathoverflow which got no votes, but it made it to Top question. I supplied an answer, while nobody else proposed an answer. How come it made it to Top question?
4 votes
0 answers
180 views

How to find out why a post was deleted

It would help to know why a post was deleted, I believe in this case automatically by a MO monitoring robot. I am not judging the decision, but would like to know why, to avoid asking such questions ...
0 votes
0 answers
128 views

Unable to delete this post

I have been wanting to delete this post for quite sometime. Unfortunately a user already answered and my reputation is so low that I can’t accept or delete it. Note my original question is nothing ...
  • 1
3 votes
1 answer
171 views

Answer converted to comment, then reverted to answer

Earlier today, this answer to this question was converted to a comment by a moderator. The same moderator subsequently reconverted the comment back into an answer an hour or so later. One of the ...
7 votes
1 answer
126 views

Request: Add the option to close to review tasks from the "first questions" queue

Reviewing something in the "First questions" queue, I currently have only three options: Leave it (i.e. approve it as is) Edit it Share feedback, i.e. either Leave a comment asking for ...
26 votes
5 answers
2k views

Updated: Is it time to replace links to the UCDavis arXiv frontend?

This question from March 2020 points out that many questions/answers link to papers at the http://front.math.ucdavis.edu/ frontend instead of at the arXiv itself, but that the frontend had been down a ...
-7 votes
2 answers
453 views

Why was my probability question closed?

Why was my question closed here? Probability every team successfully presents a solution At a summer math program a contest is held for $n$ teams. Each team, composed of $n$ individuals, is given the ...
5 votes
0 answers
140 views

How can I see the line length available for long mathematical expressions in posting on MO?

In typing up a question (or answer) on MO, I try to format a long mathematical expression so that it fits in one line. When I meet with apparent success, as shown in the wysiwyg box underneath the box ...
  • 2,417
18 votes
0 answers
750 views

Why is the "last seen 96 years ago" feature gone?

User homepages used to display the information "last seen ... (min/days/...) ago". It appears this feature is gone now. I found it useful, and while it does divulge some otherwise ...
4 votes
0 answers
380 views

Questions on the mathoverflow newsletter

Good morning, everyone... I have a little question about the mathoverflow newsletter. Ever since I subscribed to it, I used to find it every Tuesday in my gmail inbox, but I have not received the ...
25 votes
2 answers
3k views

Asking a question you know the answer to, but not answering

There has been an apparent case where the question poster asked a question that had been answered in their own paper from about 10 years before the question. This would not be a problem if the ...
  • 4,706
3 votes
0 answers
196 views

A case when the closure reason might be unclear to the OP (and possibly others)

There is this question I have read about the 3x+1 conjecture so I am thinking of 3x-1 instead closed as not research level. It is about replacing $3n+1$ with $3n-1$ in the Collatz conjecture. OP shows ...
4 votes
1 answer
324 views

Why was this math puzzle question migrated to Science Fiction & Fantasy?

There was a recent question on MathOverflow which was just incorrectly migrated to Science Fiction & Fantasy (where it has been promptly deleted). I suspect the reason the question was migrated ...
  • 29.2k
5 votes
0 answers
267 views

Help center text references a thread but doesn't indicate which one

In the "What about open problems?" section of https://mathoverflow.net/help, the last line says "To join the discussion about how MathOverflow should deal with open problems, go to this ...
  • 4,706
2 votes
0 answers
177 views

Asking whether this question will be suitable and hence answered by people on MO ? ( I will use career and advice tag)

I am thinking of asking this question on the MO website which is due to the fact that how should I write/ explain the gap in my CV while applying for PHD programs in 2022. Very brief of the situations ...
  • 552
2 votes
1 answer
422 views

Rationale for moderator deletion of a non-spammy, off-topic question

The Euler quote question "Why are people hanged if they talked" has been deleted by a moderator. I have the impression this is a new practice (correct me if I'm wrong), that deletions of off-...
7 votes
1 answer
159 views

Unfortunate title length limitation when performing dead link maintenance

This question about disc projections has a link to an animation of a Reuleaux triangle spinning inside a square. "That sounds cool, I want to see what that looks like!", I thought. ...
1 vote
0 answers
153 views

Self advertising and posting a candidate constructive proof

I would like to learn about appropriateness of posting a candidate constructive proof that decides a conjecture or open question and asking for counter examples that render the proof incorrect. The ...
  • 11.4k
5 votes
1 answer
826 views

Rationale for migration to MSE of a well-received question on MO

I was a bit surprised (annoyed?) by the migration of this question from MO to MSE. Yes, the question could have been asked on MSE, but it was asked on MO, received much attention there, with a high-...
2 votes
1 answer
2k views

What happened to the stack exchange app for iOS?

The stackexchange app would no longer launch, I tried to reload it from the Mac App Store, and it’s not there (or at least, I could not find it). I probably missed some event, is there an alternative?
2 votes
2 answers
307 views

unaccepting an answer, and then accepting own similar answer

Happened to me recently, and I wonder whether this is acceptable kind of behaviour, and not basically stealing ideas to get points. In that particular case the person who asked the question appears to ...
2 votes
1 answer
211 views

My question is removed

Recently my question entitled "Non existence of a parametrically compatible metric to a complete geodesible vector field on $\mathbb{R}^2\setminus\{p,q\}$" is removed. What is the reason?
14 votes
1 answer
556 views

How to @ a user with non-Latin characters?

When typing comments, it's useful to use the "@" system to alert a user to a comment (and also to make it clear to a 3rd party who you are addressing a comment to, as comments have no "...
  • 17.7k
1 vote
0 answers
201 views

What is the correct action if the OP finds an answer incorrect (with a recent example)?

While I certainly think that the OP of the question Non trivial zeros of Riemann zeta function definitely abuses MO in a couple of ways, still I believe it is a good example for the question in the ...
2 votes
0 answers
143 views

What is yellow about? [duplicate]

Some questions asked at MO are emphasized with the color yellow. What does this mean, and how can one emphasize a question that way?
11 votes
0 answers
195 views

Watched tags highlighting lost

On both Chrome Version 91.0.4472.77 and Safari Version 14.1.1 running on MacOS 10.15.7, I've lost the color-highlighting of front-page Top Questions in my Watched Tags list. Is this just my problem, ...
10 votes
0 answers
139 views

Citation helper: can we have it automatically convert \(...\)s into \$...\$s?

Here is an example output of the citation helper in the case where the citation's title contains $\rm\LaTeX$ code (random paper found by searching for L^\infty) ...
28 votes
1 answer
964 views

Prosus' acquisition and its effect on MathOverflow

Just saw the PROSUS acquisition news of StackOverflow. Does it have any effect on MathOverflow? In what way would it help or not help MO? Thanks beforehand.
  • 1,775
19 votes
2 answers
812 views

Using MathOverflow to help with referee work

Suppose I am refereeing a paper and wish to remain anonymous as referee. Suppose I had trouble understanding some of the proofs in the paper and made a post on MathOverflow and received a very helpful ...
  • 293
2 votes
2 answers
118 views

No MathJax line wrapping in Firefox

Example: Chrome, for comparison: Happens on Windows 10, both browsers are up to date. Should I use the bug tag? Does anybody else encounter this? Can it be something on my side? After the question ...
-4 votes
3 answers
322 views

Make it evident that bounties are non-refundable or refund them on other people's questions

When I went to place my first bounty about a month ago, the question wasn't mine and I almost put up 500 rep to draw as much attention as possible figuring I'd only have to surrender said rep if ...
  • 7,271
3 votes
0 answers
54 views

Math-mode formula in comment breaks incorrectly across lines

In the following comment, both summands should appear before the period: The source for the comment is: ...
  • 9,077
27 votes
2 answers
801 views

Concern about sending to academia.stackexchange

There have been two questions today with suggestions (one acted on, at time of writing) to close, with the question being better asked at academia.stackexchange: Referee reports and Covid lessons. In ...
  • 17.7k

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