# All Questions

445 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
652 views

### MathOverflow related ICM satellite event (2022)?

I read in Terence Tao's blog about the 2022 ICM satellite coordination group. As the ICM is now online, the IMU encourages grassroots efforts to supplement the core program with additional satellite ...
330 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 ...
• 101
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). ...
• 20.5k
589 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 ...
• 55.2k
295 views

### Please enable the AMScd package by default

We can draw diagrams using the AMScd package, and works quite nicely (see Math.SE for a working proof). However, on MathOverflow the package seems to be disabled by default, so if a user wants to use ...
• 36.9k
509 views

### Thank you letter!

I am quite aware that meta has not designed for what I am about to write, but I cannot help myself. This concerns a recent "question" on MO: US editors and reviewers vs Iranian Authors? Indeed, it ...
• 2,269
424 views

Recently, every time I visit Mathoverflow, I get a popup asking me to allow cookies. I have nothing against this in principle, but might there be a way that lets me respond and be done with it instead ...
• 12.7k
811 views

### Vandalism edits by apparently-anonymous users

There is an answer to an old community wiki question that was edited about 45 mins ago to make it sexually explicit, with a second attempted edit pending approval to make it even more so. I rejected ...
• 7,847
786 views

### Diminished activity during pandemic?

There has been a reduction in "traffic," but not nearly as much as I anticipated. This chart is maybe a few days behind a fast-moving situation, but I find it somehow comforting that math "goes on." ...
• 147k
1k views

### How to "cite" MathOverflow answer?

I am writing a paper at the moment and for one proof I use an idea which I got from a MathOverflow answer (at the time I was asking idle questions but later of course found a way to use it). I of ...
• 939
632 views

### Users with many questions having negatives votes

I am a bit hesitant to bring up this issue, but since it does bother me a good deal here goes. It has similarities with this other meta question but with a more objective edge maybe. It is a fact ...
• 873
512 views

### Should this teaching question about Graph Theory be reopened?

Should What (fun) results in graph theory should undergraduates learn? be reopened? In the comments, Andrej Bauer suggests that it is should be moved to Math Educators Stack Exchange, while Fedor ...
• 29.6k
157 views

### Improve management tools of favorite and upvoted questions/answers

Here is my wish list: When one marks a question as favorite or upvotes it, give a chance to: Mark the question with a private tag. Add a private comment to the question. Its length could be limited ...
• 3,011
574 views

### Is this question appropriate for MO? (Recognizing cohomological ideas)

About two weeks ago I asked this question on MSE: https://math.stackexchange.com/questions/1085946/when-should-i-be-doing-cohomology. (Short version: what are some ways I can tell that some sort of ...
437 views

### Should/may I delete this flawed question?

Two days ago I asked the following question: Does a lisse $\ell$-adic sheaf give rise to an affine group scheme? Even though I had been thinking about the question for half a week, I was half an hour ...
• 5,284
433 views

### Asking exactly what you need

If you compare my remarks in Do partitions of unity exist if we impose additional conditions on the derivatives? and Exponential sums you'll see that the problem and my request were exactly the ...
• 56.1k
357 views

### MathOverflow Weekly Newsletter / Greatest hits from previous weeks

I don't know how many look at the MathOverflow Weekly Newsletter, but these were the "Greatest hits from previous weeks": "Video lectures of mathematics courses available online for free" from Feb ...
• 147k
329 views

### Will MO have Community Promotion Ads?

Community Promotion Ads seem to be a useful tool for helping spread various links that might be useful for users of the site. I have mostly encountered them at MSE. I have learned several ...
• 4,580
432 views

### Use of arXiv tags

When MathOverflow began we decided to start using arXiv classification and created corresponding tags. These are still the most broadly used tags on MathOverflow. However, the usage of some these tags ...
• 42.9k
203 views

Is there any way to get back the option to sort answers in newest to oldest order?
• 3,908
481 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 ...
• 436
430 views

### What do moderators do these days?

More than 7 years ago, Scott Morrison asked a great meta question: What do moderators do?, and recorded some useful answers. Some seem to be of general significance, but many of the answers were ...
• 54k
242 views

Any question on MathOverflow (or other Stack Exchange site) shows the list of linked questions in the sidebar on the right. A question is added there if there is a link between the two questions ...
• 4,580
392 views

### 2019: a year in moderation

Since the start of the new year, I've been posting questions on various sites detailing how the various moderation actions taken on these sites break down between Moderators and ordinary members of ...
• 101
150 views

### Buttons (white-on-light grey) look like they are inactive

Many buttons on MO currently have white text on a light grey background, like this: (at least on my browser). The text is not very visible, and moreover this color scheme is often used for inactive/...
• 18.3k
423 views

### Removal of the "symplectic" tag

There is a symplectic tag on MO that currently contains just two questions. The first question so tagged dates from March 26 2017, so this makes this tag at least 1 year and 4 months old. I believe ...
• 5,015
180 views

### Why can't I edit my own deleted questions?

I recently asked a question, thought about it, decided to delete it, and I wanted to add a short note after deleting it explaining why I removed the question. It turns out, I couldn't edit the ...
• 36.9k
243 views

### Tag for errata of books

Navigating MO, it is possible to view two kinds of questions regarding errors within a book. The first kind are community-wiki questions which answers are a collaborative listing of found errors in a ...
• 1,534
343 views

### OpenScience Q&A just went live

Perhaps you are aware of the fact that there was an Open Science private beta at StackExchange that did not quite manage to develop enough traction so it was closed down recently. Some people want to ...
517 views

### 2% of viewers vote?

Maybe this is not possible to quantize accurately, but might it be the case that Q. Approximately 2% of those who view a posting on MO vote +/- on the question? That's approximately true for my ...
• 147k
1k views

### Why is my question apparently not research-level?

I just posted this question a few hours ago, and it's already had two votes to close for being off-topic (i.e., not of "research-level mathematics"). Considering it's ultimately a question about ...
• 1,015
635 views

### Is the following question on paper-writing etiquette appropriate for MO?

I'm wondering if it would be appropriate to ask a soft question on MO regarding mathematical etiquette. In more detail, I'm writing a paper that cites a well-known paper in my field, but I've been ...
• 3,577
190 views

### Remove substantial tag score requirement for suggesting tag synonyms?

I have recently attempted to create the obvious tag synonym 'dg-algebras' <--- 'differential-graded-algeb'. However, my attempt was thwarted by the system's insistence that I need five total score (...
• 6,109
350 views

### To which extent should spam posts on meta be considered a problem?

MathOverflow is one of the few sites in the Stack Exchange network where users with reputation 1 can post on meta.1 Clearly, this has some advantages2 and some disadvantages. Probably one of the ...
• 4,580
360 views

### Keeping a question on track or allowing people to chime in with stuff they'd like to mention?

I am slightly unhappy with the direction of drift to answers to this question. On my reading, the OP mentioned a phenomenon and asked how editors should react to it. This seems to have been taken by ...
• 24.7k
265 views

### New community close vote reason

While doing some cleanup on the home page just now, I noticed that we have a new community specific reason to close. The second option in the list is new, and leaves me slightly confused. While I ...
• 7,847
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, ...
• 147k
384 views

### Can I undelete questions deleted by the OP if I find them interesting?

I am not sure and I could not find anything about the ethical guidelines. A new user recently asked a question, which I've found interesting, as well as others, as it started some discussion, and then ...
• 17.8k
388 views

### Utility of Mathematics: Is this question appropriate here, and if not/if so, how can I phrase it better?

I would like to know if this question is appropriate for Math Overflow, and if so, how I can phrase it better to get the best results. Question: I recently spoke with a very nice mathematician who ...
• 101
345 views

### Role of the tag "gm.general-mathematics"

This question is about the tag gm.general-mathematics. A meta question about it already occurred here, but was less specific (and didn't generate much discussion). See also the discussion in the ...
• 55.2k
324 views

### What should the tag (open-problems) be used for?

Since this issue came up in comments to another questions on meta, I'll ask about the intended issue of the open-problems tag. Question. What is the intended usage of the open-problems tag? Should it ...
• 4,580
543 views

### Appropriateness of proposed question on applications of number theory in dynamical systems?

Update: the question has now been asked on the main site - Applications of number theory in dynamical systems I am considering asking a reference-request type question on MO about significant and/or ...
• 738
530 views

One closing option is primarily opinion-based: Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on ...
• 55.2k
697 views

### 2018: a year in moderation

Good morning, all! I'm a Community Manager here at Stack Exchange; some of you might remember me from classic answers such as a temporary change now approaching 6 years live and a list of possibly ...
• 101
345 views

### One more reason to reject an edit: too much alteration

I encountered this now, and have seen it quite frequently before: I would like to reject an edit, and the reason is something between "attempt to reply" and "clearly conflicts with author's intent". ...
• 17.1k
589 views

### Learn from my mistake

The question "What is the spin connection in 9 dimensions as opposed to 5 dimensions?" received two down votes. I would like to know what I can do to improve the quality of this question. Thank you ...
376 views

### Area 51 Proposal: Sage and its subcomponents

I proposed a Q&A site for Sage and all its subcomponents viz. GAP, Pari, Singular, Sympy, ... on Area51 here. I thought many mathematicians here who use Sage in their research and teaching here ...
• 1,117
258 views

### Quick or easy methods to post math or diagrams on chat

One of the seeming obstacles to having scheduled informal seminars on chat is the extra work, probably mostly for the leader of the discussion (should there be one), in presenting ideas on the chat ...
• 24.8k
141 views

### MathJax in suggested edits

Pages like https://mathoverflow.net/review/suggested-edits/1435 display suggested edits for review. The original and edited versions are displayed in parallel columns with the differences highlighted....
• 51.7k