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37 votes
1 answer
2k views

Viewing reputation and badges is now opt-in and compatible with the new front page

This announcement is a little late (see the discussion here), but in response to discussions over many years, we (the moderators and board) have implemented a change to the site where by default, ...
20 votes
1 answer
784 views

What is MathOverflow's "agreement" with Stack Exchange?

On June 24, 2013, MathOverflow signed an agreement with Stack Exchange, Inc., to migrate the original site to the newer Stack Exchange 2.0 platform and join the Stack Exchange network. François G. ...
2 votes
0 answers
60 views

Badges appear to have disappeared [duplicate]

It looks like badges are no longer showing on users when browsing questions/answers: The badges appear while the pages loads, but as soon as the mathjax fully loads, they disappear. Checking other SE ...
36 votes
5 answers
4k views

History of MathOverflow

What is history of this site? When and by whom was it created? What were the important milestones of this site?
12 votes
3 answers
709 views

How to make welcoming comments on "homework-like" posts that will be closed?

We get posts here that are phrased as if from a textbook or homework; the one I have in mind is Find the recurrence relation, but my question is more general. Such posts will certainly be closed. A ...
3 votes
1 answer
143 views

How does one check progress towards a (second) Socratic badge?

Not to take anything too seriously, but how does one check progress towards a (second) Socratic badge? I've seen a script for another Overflow site, but it doesn't seem to work here.
12 votes
0 answers
465 views

New Stack Exchange site for proof assistants and automatic theorem provers

Stack Exchange will soon create the Private Beta site for Proof Assistants and Automatic Theorem Provers. If you want to see what a Stack Exchange site is like in its initial beginnings, want to help ...
9 votes
1 answer
1k views

Can I somewhere see my own deleted questions?

Don't worry, I won't try to sneakily repost them or otherwise bother anyone else besides me with them. I just felt like it would be nice to see what sort of questions I was thinking about a couple of ...
14 votes
0 answers
324 views

2021: a year in moderation

As we say goodbye to the old year and welcome the new one, we have a tradition of sharing moderation stats for the preceding calendar year. As most of you here are aware, sites on the Stack Exchange ...
-2 votes
1 answer
161 views

Asking the same (subjective) question on Math.SE and MO

I asked a question a couple of years ago on MathStackexchange which was quite popular. I would like to ask it on MathOverflow as well, since I'd be interested in the answers there. But I'm never ...
11 votes
0 answers
92 views

On a MathOverflow post, the members' reputation for a question & answer shows briefly but then disappears [duplicate]

When I was just viewing the MathOverflow Improving Cauchy estimates?, this is what I see for the question & answer members' "flair" sections: Doing a refresh causes the reputations to ...
26 votes
4 answers
1k views

Should users be shown some basic information before posting the first question? [duplicate]

In an answer to another question discussing possibilities how to decrease the number of off-topic questions1 it was mentioned that: Perhaps we should force a person to read the rules before posting ...
10 votes
1 answer
938 views

About if questions in Research papers can be asked on MathOverflow

I am new to MathOverflow. I am a master of mathematics student. I wanted to ask if questions in research papers ( regarding what I am not able to understand in the paper ) can be asked on ...
7 votes
1 answer
335 views

Top-voted questions for the year?

This link shows the top-voted questions:       https://mathoverflow.net/questions?tab=Votes In a New Year's spirit, how can I restrict this query to top-voted ...
1 vote
0 answers
139 views

How can I contact a specific user

I'm new here and it was suggested to me to ask this here. There was a particular user who's answers and questions came up more than once when researching a couple math related topics and I was hoping ...
2 votes
1 answer
140 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 ...
22 votes
4 answers
737 views

Customize the modal window for the first-time askers [duplicate]

When a user asks their very first question on a Stack Exchange site, they are shown a modal window with a short advice. The content can be either a generic message or it can be customized for a ...
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....
7 votes
0 answers
291 views

Can Mathjax preview be switched off?

I recently typed an answer with a few formulas in it. While I was typing, my browser constantly reloaded the preview part below the typing window. Because MathJax apparently does three passes over the ...
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" ...
4 votes
1 answer
118 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 ...
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 ...
15 votes
22 answers
2k views

Help improve tagging!

Please help by writing tag wikis for your favorite tags! Use answers to this post to suggest tag synonyms. Finally, if you're a 10k+ user, note how easy it is for you to edit tags now!
0 votes
0 answers
57 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 ...
0 votes
0 answers
122 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). ...
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 ...
2 votes
0 answers
91 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 <...
8 votes
1 answer
397 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 ...
0 votes
0 answers
234 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 ...
2 votes
0 answers
338 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
196 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 ...
25 votes
2 answers
949 views

Request from PRIMES to keep an eye out for their problems

On m.SE last year there was a problem with someone cheating on the entrance problem set for the PRIMES high school research program at MIT. Selection for PRIMES for this year has begun, and they're ...
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 ...
2 votes
1 answer
165 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
227 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 ...
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 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
1 answer
319 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 ...
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 ...
7 votes
1 answer
125 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 ...
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
126 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 ...
17 votes
4 answers
898 views

Should we blacklist or delete the "research" tag?

Should we blacklist or delete the research tag? This site is about mathematical research, so I don't see how the "research" tag is helpful, any more than a "mathematics" tag would be helpful. Of the ...
3 votes
1 answer
170 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
2 answers
451 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 ...
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 ...
18 votes
0 answers
741 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 ...
3 votes
0 answers
195 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 ...
-3 votes
1 answer
287 views

A fuller story of up/down-voting

MO-participants should appreciate the difference between information about  +1 vote   and   +4 vs -3 votes.   This is especially the case of closed questions. I hope that MO will implement the more ...

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