# All Questions

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313 views

Sometimes a lot of good things happen as the comments under an answer to your post. Though we are notified of the answers given or the comments under the body of the post, it seems that we are not ...
575 views

### Problem with posts and comments relying on macros defined elsewhere

MathJax supports possibility do define macros. (Using \newcommand, \DeclareMathOperator, \def...
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 ...
147 views

### Braces don't render in preview

When I type braces in math mode in a post, like $\{1,2,3\}$, they don't show up in the preview. See the following screen shot. I tried all the different Math ...
275 views

### MathJax on Chat

Is there MathJax support on the chat?
464 views

### In the new site design, what should the background look like on MO?

SE is giving us pretty limited options for how the site is going to look going forward. Our most popular customization request, judging either from Carlo Beenakker's original suggestion or the ...
671 views

271 views

### Broken math on some answers [duplicate]

Here is an example. Is there an automatic way for moderators to fix what I imagine are many answers that somehow now display funny, or should we do it manually, one by one? If the latter, people ...
209 views

### Flagging as Low Quality should add the post to the review queue

In How to handle crankery on MathOverflow 2.0? Andy Putman pointed out that he flagged a post as low quality, but it never reached the low quality review queue. I feel that in order to effectively ...
983 views

### 2013 Moderator Election Q&A - Question Collection

The purpose of this thread was to collect questions for the questionnaire. The questionnaire is now live, and you may find it here. In connection with the moderator elections, we will be holding a Q&...
916 views

### Development of the MathOverflow community

From the Stack Exchange Data Explorer one can obtain the following data: Number of people who joined MO in the last 4 years and have collected at least 10000 points: 96 Number of people who joined ...
417 views

Another time recently, an user has asked a question which is very far from research level, and has been reprimanded for not reading the FAQ. However, I realize that there might be a problem in the ...
228 views

### Where is the off switch for the concurrent preview now?

I feel like an idiot but I cannot find it. Meanwhile, if the post is long and has a lot of LaTeX formulae in it, and the connection is imperfect, the wysiwyg regime is a non-stop fight. I figured out ...
580 views

610 views

### Is bounties period sufficient?

I edit the quesion according to the comment of professor Edgar Is it reasonable to suggest to MO to extend the bountiess period from 7 days to 3 or 4 weeks? Can mo be an exception, according to ...
429 views

As a typical scenario, assume I ask for examples of some mathematical phenomenon and somebody answers my question and provides 2 families of examples. After several months, I figure a third family of ...
498 views

### why the extra step in registering?

On other stackexchange sites, when an unregistered user logs in we can enter a name and password into an Open ID page, and once that is accepted we are taken to the front page for that stackexchange ...
406 views

I like to hang out in the homotopy theory chatroom. I used to navigate to this and other chatrooms using a link on the main site. This seems to have disappeared. Is there a reason for this change? I ...
436 views

### What to do with useful answers to questions closed as duplicates (or by some other reasons)?

Before the question Intuitive explanation of concentration of the measure for spheres has been marked as duplicate (correctly I believe), it has got an answer which might provide additional useful ...
587 views

I have the impression, that there is no concensus among MO moderators about sharing knowledge on MO; the impression is based on quite contradictory reactions to offering to share such a knowledge, ...
159 views

### “post locked” and “post unlocked” chronology is reversed in history

This is kind of minor, but it seems that the revision history of a post occasionally fails to be written in chronological order, when events are in close succession. For example this post history has ...
4k views

### LaTeX style accents in regular text

LaTeX has some handy macros that allow the insertion of diacritics and other special characters in text mode. Relevant tables from the Comprehensive LaTeX Symbol List: These are handy since they don'...
249 views

### where is the Tips and Tricks list from MO 1.0?

I asked a question at why the extra step in registering? whose solution by Shog9 I think would be worth placing in the Tips and Tricks list. But I don't see the Tips and Tricks anymore in the right ...
949 views

I'm slowly going through some topos theory papers by Lawvere. In almost every paper, there are many small sayings and sometimes entire sentences which I do not understand and have never explicitly ...
1k views

### Why is LaTeX not displaying correctly? [duplicate]

In this answer On a proof of the existence of tubular neighborhoods. and Neil Strickland's answer here Is the counit of geometric realization a Serre fibration? the laTex is not displaying correctly (...
346 views

### Trouble understanding criterion to answer protected question

This question is protected, and the box at the end says: "To answer it, you must have earned at least 10 reputation on this site." What does this mean? I am asking because I am currently shown as ...
172 views

### Math Overflow not available as a chat parent user

I was configuring the Teacher's Lounge ping for MO when I realized that currently, the option to change chat parent user to MO is not available. Could this be added? Also, superpings don't seem to ...
253 views

### How do I use the comment notification system?

I would like to take better advantage of comment notifications. Where can I find a complete account of how they work? For example, it appears that writing @FullUserName in a comment will lead to a ...
264 views

First, I hope that the request is appropriate and asked at the right place. If you have any issue with it, remarks are warmly welcomed. When flagging a question for "Off-topic > This question belongs ...
266 views

There is a 5 minute limit on editing comments. Perhaps the idea is to keep the flow of the thread faithful (to avoid distortions--or even manipulations--of a discussion). However I happen to be quite ...
290 views

### What should the “hover text” for the MathOverflow link on all SE sites be?

If you go to the bottom of any page in the SE network (e.g. this one!), you'll see a list of SE sites. In particular there's a link to MathOverflow, that is potentially seen by a large number of ...
149 views

### Merging old duplicates?

New to meta, so apologies for any breaches of etiquette. I've just noticed that these two old questions are duplicates: Smallest permutation representation of a finite group? Smallest n for which G ...
639 views

### Loss of reputation because a “user was removed”

I just noticed that I lost 10 points of rep because "user was removed". I don't get it.
336 views

Sometimes you see in answers or questions a link to an earlier answer to a different question. The url often is a mysterious sequence of digits and letters. How is it obtained? Linking to a question ...
199 views

### I flagged a question with the wrong option. What should I do?

Should I leave it as it is, or leave a comment to this, or flag for moderator attention and explain my mistake? I do not want to draw attention to the specific question this is why I do not link it ...
2k views

### What does research-level mathematics mean?

My understanding of this is that mathematics is research-level if: you could conceivably write a paper on some aspect of it; it could be taught in a grad-level course; it is not widely known ...
111 views

### When we close questions and suggest MSE, should we link to their How to Ask?

When we close questions by saying MathOverflow is for mathematicians to ask each other questions about their research. See Math.StackExchange to ask general questions in mathematics. ...should the ...
88 views

### Formatting problem

In my answer to When is the closed unit ball in a smaller Banach space closed in a larger Banach space? I wrote the following: > Edit: $Y=Z^*$ does not display correctly when it is in the body ...
377 views

### Undelete request, question 23943

NEVER MIND --- the same moderator who suggested I post here has solved the problem by deleting my copy-paste job and undeleting the answer we wanted undeleted. [or maybe it got undeleted by some other ...
156 views

### Is there an option to hide migrated (or even on hold) questions?

It would make sense, especially for MO, to have an option to hide migrated and on hold questions in the user preferences. Is there a way to do this already? If not I think this would make a nice ...
331 views

### Migration to Physics.SE

Several times, including perhaps this question today I would have liked to suggest migration to Physics.SE. Similar to this question I would like to ask for this feature to become available as a ...
294 views

### Bounty policies

When you propose a bounty, these points are immediately subtracted from your score, and can never return, even if there is no satisfactory answer. I think this is unfair; can someone explain the ...
130 views

### What's the difference between two off-topic flags?

I'm sure that this is somewhere on MMO, but my searching hasn't turned it up. When I flag a question as off-topic, two of the options that I am given are "This question does not appear to be about ...
221 views

### Should we have standing bounties?

There have been proposals to stop the bounties from expiring. On meta.SE these have been received rather badly, but would be most likely welcome here, as offering rewards for unsolved problems has a ...
136 views

### Garbled MathJax in some old questions [duplicate]

In several old questions/answers I have seen in MathJax the combination \\, where it obviously should be \, and also ...
457 views

### 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 ...
325 views

### 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. ...
122 views

### New interface - empty rectangles in the reputation column

I've got new interface and I like it, but there is something strange: Some numbers are supposed to be there, right? They are present on other StackExchange sites with this interface
Guidelines to prove that $2^{\sqrt{2}}$ is a transcendental number? question bumped into https://mathoverflow.net/ after making an edit. I am not sure if that adds anything to the question. Should ...