# All Questions

1,673
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### Is it appropriate to ask why a textbook on nonlinear algebra not well known?

I am wondering if it would be worthwhile to ask why a certain textbook and/or its authors (Dolotin and Morozov) are not well known.
From the description of the book:
This unique text presents the ...

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1
answer

217
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### Will this question be suitable for MO?

Recently I have asked two questions in MSE regarding the simultaneous solutions of the following inequalities:
$$x+y>p_{\pi(x)}+p_{\pi(y)+1}\tag{1}$$$$x+y>p_{\pi(y)}+p_{\pi(x)+1}\tag{2}.$$
My ...

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580
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### What about the question "Hint for the Elementary Proof of the Inequality of Prime Numbers"?

See the link https://mathoverflow.net/q/165492/48849.
I think that my question (actually it is not originally my question, it is from someone on the AoPS) might suggest us to prove the Bertrand's ...

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183
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### MathOverflow feature: facilitating collaborations (algebra & other sciences)

One of my goals as an academic is to facilitate collaborations between my field ("pure algebra") and other sciences. We can't expect administrative staff (for instance, the Dean of Science) to help ...

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1
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329
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### How can the question ban be removed:

The question is deleted and then I'm banned on MO after I asked the following question on MO earlier ( it's first asked on MSE then after sometime with no answer; I asked on MO) : https://math....

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1
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157
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### Should there be another tag for vector bundles in Algebraic geometry (over schemes)?

Should there be another tag for vector bundles in Algebraic geometry (over schemes)?
Some questions about vector bundles in the sense of algebraic geometry are given the tag whose tag description ...

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2
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159
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### What to do with questions that are partially answered

I have asked a question here.
Point of question was to understand about holonomy of gerbes. I have said that at the end of the question. I did said that there is some equality which I was not able ...

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2
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216
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### A question of notation: what does $x\lt y\in S$ mean? [closed]

I've seen expressions like $x\lt y\in S$ used on this site to mean "$x\lt y$ and $x\in S$ and $y\in S$." This has me worried because I sometimes use $x\lt y\in S$ to abbreviate "$x\lt y$...

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1
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97
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### One number on top of another with mathjax?

Probably a simple question, but how can I write my script in mathjax to show one number on top of another and with a minus sign in the left side?
Like this:

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1
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216
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### Why is my question on hold?

Why is this question fine, but mine is put on hold? They seem to be very similar questions? Or is there some distinction that I'm not getting?

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1
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336
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### Is a perhaps somewhat cervellotic but not HARD question, regarding mathematical logic, suitable for MO?

This is the question:
https://math.stackexchange.com/questions/917492/can-the-logical-equivalence-of-two-different-statements-to-the-same-proposition

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1
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167
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### Apparent bug in reputation calculator [duplicate]

Mine appears to be stuck at 2321 -- even though my answer here keeps getting upvoted:
What definitions were crucial to further understanding?

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1
answer

177
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### How to get better response on a problem (specific case study) and suggestions from mathematicians?

Why not enough response for this question. I guess there is too little interest in classical Fourier analysis. I have given enough motivation, which is about proving a possibly new result in Fourier ...

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1
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452
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### MathOverflow's Facebook page

The Facebook page for MathOverflow is currently pulled from the Wikipedia article. The Twitter account has no avatar and only 90 follows. The most active is the Google+ account, which posted about ...

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2
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137
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### Why is my question is closed and do I get views?

I have a question about my MathOverflow post: the minimum amount of x, x(x(125x + 300) + 240) + 64 is zero, what is 5 times of x?
Why is my question is closed and do I get views?

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313
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### Why was the question on the history of $y=y(x)$ put on hold?

It seems that we are still accepting questions on the history of mathematics as well as on notation. Why was this one not considered to be of research level on these two tags? I have checked the help ...

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2
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288
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### Not accepting answers

In my opinion, there is a moral obligation on those asking questions to do something with the answers: Either accept one, or to explain why none of the answers is satisfactory. I do not see this ...

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154
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### The meaning of the badge "Sportsmanship"

I would appreciate if you explain on the meaning of the badge "Sportmanship".
It is described as below but I can not understand what does it mean. May you describe this badge in an equivalent words?...

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1
answer

289
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### Is it possible to close my account without deleting it ?

I feel like, for some reason, I am not able to ask interesting questions here anymore. So it would probably be better to have my account closed. Still I asked some well-received questions in the past ...

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1
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115
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### Is there a best day of the week for offering a bounty in MathOverflow?

I'm thinking that the weekend is not a good time to offer a bounty because people are less likely to be at work. So fewer people get to see the offer before it expires.

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419
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### Would the question "Fourier series is to Fourier transform what Laurent series is to …?" be on topic at MO?

I asked the question Fourier series is to Fourier transform what Laurent series is to …? over at MSE, since that's where my questions usually belong to. But since I couldn't find any resources on it, ...

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82
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### What about bountying a meta question?

While I do agree in principle that anything meta should not have anything to do with reputation changes, there might still be cases when one would like to stimulate more activity with some difficult ...

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1
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110
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### Possible bug in migration

Moving back my question to MO
I have given link for question as References on Gerbes. This I have done using my computer.
Now when I check it from my iPad It is taking me back to meta question.
I ...

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1
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345
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### Re-Posting on Math.StackExchange

Here is the link to question:
Counterexample Required (Standard Notations)
Perhaps it seems that I am being overly impulsive by posting this (and maybe that is right). But after looking at all the ...

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1
answer

185
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### How do I login to my old MathOverflow account?

I realise that this question has been asked in various forms already, but I still have a problem.
I have an old MathOverflow account
https://mathoverflow.net/users/6827/konstantin-ardakov
and a ...

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answers

96
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### 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" ...

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56
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### 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 ...

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121
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### 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}{\...

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231
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### "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 ...

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124
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### 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 ...

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228
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### Discouraging (Some) Upvotes

I'm tagging this as "discussion", not as a feature request, because I am quite agnostic about whether it's a good idea.
That said: My subjective impression is that lately a lot of very bad/...

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78
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### Can I ask for advice or opinions about the choice of a variant of a theory?

Basically, I have 2 versions of a theory. This is like having two competing theories of complex numbers, one where $i^2=-1$ and the other where $j^2=1$ (hyperbolic numbers) or extending reals with $+\...

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97
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### Please help me improve my Q&A and possibly reopen certain questions

Prepare to downvote me. But don't think of not downvoting me just because I pre-emptively self-deprecated myself to put a show of humility. Just pretend I'm as arrogant as I may be perceived to be in ...

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89
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### Why did my profile picture disappear?

I discovered few days ago that my profile picture is gone, had to reupload it.
Did anybody else encounter this? Do you know the reason?

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186
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### I want to answer a closed question

Please reopen this question:
A problem of an infinite number of balls and an urn
I have a nice answer.
(Added (DR): now re-opened. Please note there are ten deleted nonsense answers, which I imagine ...

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answers

106
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### Can I delete one of my posts that has been closed as off topic and received an answer with positive up-vote?

Can I delete one of my posts that has been closed as off topic and received an answer with positive up-vote?
Should I delete all my posts that has been closed as off topic? (with/out answer)

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answers

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### "Voting corrected" seems incomplete

A few days ago, I was surprised to see a sudden increase in rep of 80 points in the space of a couple minutes. When looking over my profile today, I saw that I had lost 60 points, with the annotation &...

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210
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### Would asking this question be permissible on the main site?

I have been working on a problem for days, that I previously mentioned on ComScience StackExchange. The answers were helpful. But, I need more information to develop a polynomial space algorithm.
I ...

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137
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### Need details or clarity

I need some help to understand what is unclear with my question A reform of logic to secure naive set theory? and also what details are missing, from other persons perspective.

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104
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### Is my question for Math Overflow?

In the first paragraph of Prove or Disprove this Darboux-like sum of a function defined on infinite limit points converges to zero, I state that I do not know whether this is a research question. Is ...

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61
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### Potential rendering issue for formulas

when I entered the following
$$\pmb{ \frac{d_+^n}{dx_+^n}}:= \left(1, \frac{d^1}{dx^1},\,\dots,\,\frac{d^{n-2}}{dx^{n-2}},\,1\right)$$
I observed that the defined fraction has an unsharp ...

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89
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### Setting up math Q/A site in foreign language

Now that my college shifted to online education because of the coronavirus, I would like to setup a MathOverflow style site in Hungarian where I could post exercises, and students could comment, post ...

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109
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### Would introducing an "operations-research" tag be appreciated?

What are your feelings about introducing an operations-research tag?
I was tempted of introducing it but as it OR is also covered by combinatorial-optimization or graph-theory and maybe also other ...

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133
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### Would this soft question be appropriate?

A few weeks back on the Math Stack Exchange, I asked this question about "interesting" PDEs. It got (no answers and) some deserved criticism, so I opened a discussion on the Meta there and made some ...

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### A questions about "on hold" status of a question and about "closed" status

I have a question that´s been put "on hold". And I have some questions.
Who can see that this question is "on hold"? Can that see all users of the site or even some people who ...

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0
answers

104
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### MO links chopped in gmail pdf viewer

Currently I am preparing the text for a paper (together with two coauthors) where we cite help from MO on two occasions. I am doing this using the cite button. It ...

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65
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### Is it bad practice to edit my own question with details from the paper provided in the top answer?

I asked a question and received a helpful answer that showed me work that I did not know how to search for. The answer was a link to the author's paper and some context on its relevance. While I could ...

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95
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### reminder for comments/responses

Suppose a user commented on my post and due to some reason I overlooked and then forgot.
As it is my question, the one who responded for my question would not care to write another comment if I do ...

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165
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### Should there be Anonymous Comments?

I currently got a downvote for my question Making a Graph Eulerian for Applying TSP Heuristics, but unfortunately the downvoter didn't leave a comment explaining what the motivation was, thus ...

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### i can’t log in the ios app

I can’t login the ios app, how to fix this problem? Neither the overflow nor the exchange.