# All Questions

490
questions with no upvoted or accepted answers

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150
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### Ask for help in proofreading a book

In case, one had written a book manuscript, but it was not possible to find, by other means, proofreaders mathematically knowledgeable enough to proofread the manuscript, would it be appropriate to ...

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0
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80
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### Display of differences between revisions

Being impressed by the visualisation of differences between revisions on this site (and MSE as well) I cannot resist to ask: what javascript libraries are used for this? I know that MathJax is used to ...

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0
answers

87
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### Problem with "move to chat" function?

I seem to be having a problem with the "move to chat" button. In a recent question, I received the "consider moving to chat" prompt, and I clicked the proffered button; however, it didn't work. ...

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0
answers

214
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### What do you see to upvote an answer?

Question is as in the title?
What makes you to up vote an answer?
Most of my answers are with $0$ upvotes. I am trying to understand the reason. One of the reasons could be that mathematics that I ...

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0
answers

154
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### Migrated to MSE, did not get enough attention. What to do?

This question is migrated to MSE from MO.
It did not get enough attention in MSE even after offering bounty.
Another question with a bounty with not even a single comment.
I think topics like ...

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0
answers

219
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### Area 51 Proposal: Math Challenges

On September 1st, I started a proposal on Area 51, for users to share, discuss and answer mathematical challenges that they have. I did this because I felt that these types of problems have no place ...

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0
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128
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### Ability to flag for migration to other stackoverflow sites

Currently on mathoverflow, flags can be set for questions to be migrated to meta.mathoverflow, math.stackexchange, and stats.stackexchange. However, there are often questions that belong on other ...

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0
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180
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### Is MathOverflow missing a tag for ODEs?

TL;DR: Is there a tag which is intended (only) for ordinary differential equations? If not, should there be one?
The situation with the tags related to ODEs seems a bit unclear to me. AFAICT there is ...

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0
answers

115
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### Recommending to move the question to another site

I am trying to recommend to move the question to another SE site.
When I press the corresponding button, the menu pops up which offers me choices:
meta, MathSE, stats. And no more choices. How can I ...

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0
answers

226
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### Synonym by a moderator which needs approval?

When I look at list of tag synonyms I see there a pending synonym rsk-correspondence $\to$ robinson-schensted-knuth and François G. Dorais♦ is listed as the creator. You can also see that this synonym ...

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0
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81
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### Does it make sense to have both "surfaces" and "curves-and-surfaces" tags?

I have noticed that there currently exist tags surfaces (with description "A surface is a two-dimensional topological manifold. The term can also be used to describe a smooth surface, depending on the ...

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0
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79
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### Accepting an answer to a closed question

To my surprise I discovered that I can accept an answer to my question that has been closed.
I am not sure whether it is "good" or "bad", my question is whether it is an intended feature and if yes, ...

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0
answers

71
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### Tagging Answers?

Simple question: should the tagging of a question cover answers?
Suppose I asked a question about a mathematical problem and in the answers contained for example:
pointers to literature
algorithms
...

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0
answers

113
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### What should I do if I want to ask an almost duplicate question?

There already exists a question very like the one I want to ask, with a very partial answer by the OP. I want to ask the same question but restricted to a special case, for which I hope more can be ...

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0
answers

109
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### Can someone please help me login to my account

I'm so sorry, but I got logged out of my account:
https://mathoverflow.net/users/10290/erin-carmody
I tried to log back in but have changed my email several times... It might be an impossible task. ...

1
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0
answers

255
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### Migration site list lacks entries

The question What is the integral of temperature over space called? obviously belongs elsewhere. Most probably the proper place is physics.SE, but in any case not here on meta, not on math.SE, and not ...

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0
answers

44
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### Should I accept an answer to the "concrete" part of my question and ask another one about the "vague part"?

Suppose I am trying to prove a certain statement $S$ and find that a certain plausible statement $T$ implies $S$. However, I don't think that they are equivalent, and so there are possibly other ...

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0
answers

69
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### Can one un-(vote to close) a question without voting to reopen?

Scenario (and it actually happened): I was first to vote to close a question as too broad; OP modified the question in such way that my objection did not apply anymore; this modification resulted in ...

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0
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193
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### Is this combinatorial semigroup theory question suitable for MO?

The question is here.
For convenience:
Let $S=M_n(\mathbb{Z}_2)$. Let $D^{(n)}_2$ be the matrices in the rank $2$ $\mathcal{D}$-class of $S$. Find
$$N_n=\left\lvert\left\{\begin{array}
\, e &...

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0
answers

99
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### Formatting: Diacritics outside of Formulas

I recently tried to write the name of the French mathematician Gâteaux in the correct way, i.e. with a circumflex over the first 'a'.
Using MathJax formatting inside inline math or in formula, that ...

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0
answers

80
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### Locating a question on zero-one vectors in the kernel of a matrix

I remember there was a question posted to MO about maybe two months ago or so which was, essentially, about the existence of zero-one vectors in the kernel of some matrix. Can anybody help me to ...

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0
answers

188
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### The tags (transcendence) and (transcendental-number-theory)

There exist tags transcendence and transcend.-number-theory (probably shortened from transcendental number theory to fit 25 characters limit for the tag name). At the moment, the tag-info is empty ...

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0
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91
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### How to Ask Multiple Very Specific Questions About New Applications of an Old Theorem

This question is a different flavor of this one, the difference being, that I am not looking for help in understanding something.
My "problem" is, that while ramping up my knowledge about the ...

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0
answers

132
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### How to ask a question on an accepted answer?

I had asked a question about 6 months ago and I had got an answer to the problem. Now, I have some questions on that problem. Can I leave comments for my questions there?

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0
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100
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### Migration of questions to cs.SE?

This question just got closed as off-topic. As someone else had already commented there, it is really a computer-science question and thus clearly belongs at cs.stackexchange.com. But we currently don'...

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0
answers

188
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### Troubles with math preview: preview of formulas dies on me when writing a question or an answer

In mathoverflow I avoid asking questions and giving answers because the preview of mathematical formulas does not work: in the preview the formulas are shown precisely as I type them, with dollars and ...

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0
answers

257
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### Can I ask a question here whose answer I did not get at math.stackexchange?

I have asked a question about solution of heat equation at math.stackexchange but no one answered. I think may be the question is too professional to be asked from learners. As this platform is for ...

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0
answers

338
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### Recovering just for me my deleted question (or answer)

I am sorry to ask. There was an MO Q. by me (which addressed in an elementary way the infinity axiom, actually by just providing another formulation of algebraic flavor). I have carelessly deleted my ...

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0
answers

296
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### Are we ready for a MathOverflow Overlay?

As varied as my participation in MathOverflow has been, I seem to gravitate towards number-theoretic issues involving $\phi$ and $\sigma$. I am considering writing an overlay article. This would be ...

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0
answers

591
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### Algebraic Geometry Chat Room

At the request of Denis Nardin, I have started an MO algebraic geometry chat room at http://chat.stackexchange.com/rooms/23540/algebraic-geometry. For now I am the room owner, but I am happy to let ...

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answers

112
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### Same email ID, multiple mathoverflow,net IDs

I had an ID on mathoverflow, stackexchange, which changed without my knowing. I used the anonymous way to answer/question, ie with just my email ID. So now I have two user IDs with the same email ...

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0
answers

110
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### Log in problem on MO

I am unable to log in, unfortunately. After I click log in on top there appears a bubble on top of the page saying "Welcome back Frode Bjørdal, You are logged in, You are being redirected", and then I ...

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0
answers

356
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### Why not restoring the + 10 reputation for questions but make each negative vote also count -10 reputation?

To maintain MO alive and well, we need a regular flow of good questions, and not too many bad questions. It seems to me that one has given more weight to the latter, forgetting the former which in my ...

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477
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### Reference Requests: Good Ways and Bad Ways

I would like to know of types of bad examples of MathOverflow questions that are tantamount to reference requests. I can think of two:
a) A reference request for something that is properly outside ...

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247
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### Preferred Conciseness of Contributions

This is a followup question to Appropriate Reaction to a Failed Reference Request on MO related to Reference Request for Integer factorization with LP/ILP
I'm about to prepare an answer that ...

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0
answers

129
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### Is it appropriate to ask for references and point to a blog with the same question

I wonder if the community would find it appropriate if I ask a question like
"
Is this or that known? It would be interesting for this and that reason. For details see our blog "blah" where we ask ...

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0
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178
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### soft-question tag for discussing mathematical best-practices

I asked a question about where people could store slides for future reference. As a discussion of best-practices in the Mathematical profession, I thought it was appropriate for the soft-question tag ...

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0
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333
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### How to merge old mathoverflow account?

I know that this question has been asked and answered here: How can I log in into my old mathoverflow account? I have e-mailed the stackoverflow admins twice, but nothing has happened for 48h now. ...

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0
answers

96
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### Too large font in the question names

Previously much more questions could fit one page in the question list. Currently the font is giant and the information is much less dense.

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0
answers

103
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### What input is blacklisted on MO?

I wonder whether it could be possible to make public which input is blacklisted in titles, posts, tags here on MathOverflow. Or at least a redacted list - I could understand that the mods might keep ...

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140
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### Announcement: A stacks project for category theory

I'm releasing today The Clowder Project, a tag-based wiki and reference for category theory powered by Gerby.
I plan to eventually make it into a comprehensive resource for category theory, in the ...

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0
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182
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### Incentivizing ‘bad’ questions

As a 5+ year member of MO, I remember the old days when upvotes on questions only netted you 5 points as opposed to the current 10.
While I was generally glad to see good questions being rewarded in a ...

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0
answers

217
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### Is asking for the status of Vandiver's conjecture suitable for MO?

I wonder what the current status of Vandiver's conjecture in number theory is? An internet search revealed the paper "Vandiver's conjecture via K-theory" by Alexander Stolin from 2020 on the ...

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128
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### Should the dots used in lambda-calculus notation be typographically treated the way binary relation and binary operation symbols are?

Within this question we find the notation $\lambda f . \lambda g . \lambda x.f(g\ x)$, and that causes me to wonder about a point of LaTeX and MathJax usage.
The code ...

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210
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### May I Offer Money to People Who Answer My Question on MathOverflow?

Erdos and others have offered prize money to people who answered their questions.
May I offer money to people who answer my questions on MathOverFlow?

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123
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### Is deleting posts a good practice?

In principle, MO posts can be cited in papers; on the other hand, MO posts get deleted sometimes. There is a risk, then, of referring a MO post which no longer exists. Is deleting posts a good ...

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0
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192
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### Difference between Mathematics SE and MathOverflow

If I post a question that I invented myself on Mathematics SE, I receive comments like "did you do homework?" and, eventually, "why do you ask if you know?". Fair enough. It seems ...

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128
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### Gaining points for posting

How do I earn 50 points to comment if I am not allowed to comment or post? So my problem is as described as far you can see.

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0
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133
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### Is this question about partition numbers too broad/vague?

Here's my proposed question (edit: now posted) (edit 2: posted version now edited):
I have found an algorithm for counting partitions, and I've been able to express it into a mathematical formula, $P(...

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0
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165
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### Asking if a post about a mathematical characterization of gravitational geons can be potentially interesting for the main site MathOverflow

I would like to ask about if a question about the following subject can be potentially interesting and on topic on MathOverflow. I would like to ask on the main site of MathOverflow about the ...