All Questions

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....

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 ...

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 ...

Is this statement true or false? why? Every real function bounded continuous on R is continuously uniform. I have an example but I'm not sure; f=x/(x+1) that is bounded and continuous Thanks from your ...

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}{\...

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). ...

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 ...

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 ...

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 <...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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?

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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-...

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. ...

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 ...

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-...

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?

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 ...

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?

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 "...

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 ...

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

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, ...

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) ...

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.

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 ...

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 ...

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 ...

In the following comment, both summands should appear before the period: The source for the comment is: ...

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 ...

I refer to this question by André Henriques. It is nonstandard, and prima facie there is a clear case for closing it, and at the time of writing there is one vote to do that. However, I personally ...

Apologies if this has been addressed on Meta before (it's a little hard to know the right keywords to search for Meta questions with). Question: Has there been any systematic attempt to try to figure ...