Newest Questions

Morfin Sallis' question was closed. I am trying to understand, why that was. From my vantage point, the reasons given do not seem to apply. Later I answered an extremely similar question, somebody ...

Two days ago, I asked a question on mathoverflow, and even though I tried to formulate it was well as I could, it still has received negative three in rating, which I interpret as that the general ...

In Mathoverflow, how is the "Reached" computed in profile of every user?

My question, which I tried to formulate as well as I could, was apparently not to the community's liking, and received two down votes. So my question is, why was the likely reason it was down-voted, ...

Some answers are currently rendering strangely for me, with no author displayed, and very little whitespace padding between the answer text and its comments (where you’d expect the author). For ...

I understand from this post that stackexchange sites with their own branding, including their own domain name, are in danger of losing that privilege and becoming a stackoverflow site; the post refers ...

Dave Benson recently raised the issue that one of his answers on a community wiki question was attributed to another person who edited the answer (and after edits, there was more material provided by ...

The current MathOverflow policy on AI states, "If the mathematical component of your content is deemed to be generated by AI, it will likely be deleted." I understand the rationale for this ...

Why is this question closed?(Better to say: Why is it continuing to be closed and is not reopen?) On structure of certain universal $C^*$ algebras (An attempt to Non Commutative (Torus) ...

I would like to see all questions whose tags contain the word "geometry". Question. Is there a simple way to do that on MathOverflow (different from manually checking all 36 tags containing ...

I just saw a ton of badges awarded for Popular/Notable Questions. Did something change how views were computed or something?

Why can not I vote to reopen the following question? (No button available) On structure of certain universal $C^*$ algebras (An attempt to Non Commutative (Torus) Knot theory)

It'd be wonderful to install tikz on MO. TeX allows the tikzpicture environment hence tikz on MO should be possible. Can anybody install tikz on MO?!

I was 180 points yesterday. Today I deleted a post with -4 vote so I should be 188. But I get 230. What is the reason? (now I am spending 2x50 for bounty hence 230_100=130) But I am curious about that ...

As far as I can tell, there are exactly two tags on MathOverflow that contain names with nobiliary particles: derham-cohomology and von-neumann-algebras. There's no consistent hyphenation pattern ...

Can I post the solution of the twin prime conjecture here, with very long text? Is this is allowed?

I vaguely recall an old question about, roughly, the paucity of "arithmetic-free" fast-growing functions $\mathbb{R}\rightarrow\mathbb{R}$ in the following sense: if you want to define a ...

I remember that, it was previously possible that one choose his/her question to be a community wiki question. But today I could not choose this option. The post is here (A list of ) ...

Here somebody complained that they cannot access a certain paper, and I gave the sci-hub link to it. Is this allowed on the Stack Exchange network/MathOverflow? (As pointed out by Martin, they can ...

Here is an example from MO illustrating the phenomenon that posts answering questions are being deleted by socalled "non experts". The asker asks for a "non trivial" example of an $...

This post was copied verbatim from another user's post on MathStackexchange. (And no, this is not the same poster using different names on different sites; the original MSE poster popped up in the ...

Hello fellow MathOverflow community members -- what follows is a farewell message. I understand if there are community members who feel that something like this is undesirable; please feel free to ...

The tag network-theory currently exists on MathOverflow with 26 questions, but it has no tag wiki. This makes it unclear for both askers and answerers what the intended scope of this tag is and how it ...

I have a non-trivial math problem in electrical engineering research that several engineering professors have been unable to solve, and I have attempted to ask about it on Math Stack Exchange. Nobody ...

Can I get a direct link to comments I flagged (if they haven't already been deleted, of course)? I have already seen this answer and the page I get when clicking on "helpful flags" on my ...

I recently posted a question: Conics in the surface $x^4 + y^4 -2n^2z^4 = w^2$ An answer was provided. After studying the answer for some time, I realised that the answerer had misunderstood my ...

Recently, at the left bar on mathoverflow.net and the SE webpages, a link to an AI assistant has been included. The AI has some flaws and needs training. Some examples: When asked if -1 is a root of x^...

What is the reason that "Start bounty" is not active for me for the following post A quantity associated to a (finite or Lie or quantum) group I already devoted "200 reputation&...

A couple of times now I have seen a user explicitly ask for upvotes on an answer. In one case it was in a different answer on MathOverflow and the request was edited out by another user (possibly a ...

On this old post, I find the following deleted answer: Presumably this was not the first version of this post, yet there seems no way to access the edit history. Is it a) normal and/or b) intentional ...

In the recent MMO question Minimal MO score requirement for potential moderators, there are several answers summarising possible responses to the question. @YemonChoi asked if people should upvote ...

Now that the election is over, I think it makes sense to discuss raising the minimal reputation points requirement for moderator candidates in future elections. Current requirement of 300 reputation ...

The 2025 Election is over, the votes have been counted, and on behalf of the current team and board, I'd like to welcome to our new moderators: Congratulation to you both! Let me thank Todd Trimble ...

The 2025 Community Moderator Election is now underway! Community moderator elections have three phases: Nomination phase Primary phase Election phase Most elections take between two and three weeks, ...

The purpose of this thread was to collect questions for the questionnaire. The questionnaire is now live, and you may find it here. MathOverflow is scheduled for an election next week, 2025-05-13. In ...

Few months ago I noticed that I am forced to re-login any time I leave mathoverflow for another stackexchange site in my usual desktop browser (Firefox on Linux). I use GitHub account to login on ...

The question Assessing effectiveness of (epsilon, delta) definitions has been recently reopened. In the history, I see that it has been "left closed in review" two times in the past 10 hours,...

I hope it is not just me, but when I open up a question on MO, I see a pair of braces above the question title. (See screen cap below.) You can see them in the page source too (line 721 and 726 below)...

The following Minimal (Non-)Working Example is boiled down from @ElíasGuisadoVillalgordo's answer to Is there a complex which computes Čech cohomology?. Consider the following two displayed formulæ: $...

My name is Ben Sprott and I am a physicist, computer scientist, and inventor. I have been using MO for years. I get a lot of hate in here on top of the great answers. I need to know how I can keep ...

...For example, this one: Is there a non-simply-connected topological ring? The question is insanely verbose and "thought-provoking" in its form, but its mathematical content is trivial. The ...

Today I composed a math research question for this site. Trying to submit it, I had to click on motorcycles, bicycles, cars and pedestrian crossings for more than 10 minutes. Could you implement some ...

A recent question of mine was made CW by a mod without any prior (or posterior) notice or discussion. While I'm fine with mods deciding that some questions should be CW, I wonder what criteria are ...

Mathematics, as we all know, is a diverse forest full of interesting, strange, natural, obscure, appealing, highly abstract, and intuition-defeating topics: depending on which researcher you ask the ...

I just noticed that my account on MO was sent back to 0, like all questions & answers appear to be deleted. How can this happen?

Users' reputation and badge counts aren't being shown on questions. Here's what I mean: This issue seems to only be affecting MathOverflow (not including MathOverflow Meta). After inspecting the HTML,...

https://math.stackexchange.com/questions/5024382/characteristic-classes-of-flat-g-bundles-induced-from-g-invariant-forms-on Here is the question I posted on MSE several days ago. It seems to be a bit ...

It’s that time of the year again! As we bid farewell to the year that's concluded and welcome the new one, we have a tradition of sharing moderation stats for the preceding calendar year. As most of ...

A few years back, I got a question ban for asking poorly received questions. I didn't know how to improve most of the questions so I deleted them. The last time I posted was August 6, 2024. The ...

My meta question on breakthroughs of 2024 has so far not yielded the outcome I was hoping for. Let me try a different tack. I propose posting a question with wording something like this: REMARK: The ...