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What does exactly mean the number associated to an user account?
Accepted answer
11 votes

The numbers are assigned consecutively to all accounts created on the site. With one exception, they are positive integers. The first accounts are created by SE developers in the process of putting ...

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Is vote counted if a post is deleted?
Accepted answer
4 votes

There are two different vote counts on your profile: public (on summary tab) and private (on votes tab). Votes on deleted posts: are included in the public count are counted toward the badges. It ...

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Is the current version of featured questions fair?
4 votes

Bounty amount and duration there is no explanation (in my opinion) why the loss should be variable although the service (listing time) is the same. You will find an explanation if you try to set ...

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Why can't I insert formulas from MS Math Input Panel app?
4 votes

Update The answer below was written under the assumption that you could get MathML markup from Math Input Panel. This turned to be false. The Math Input Panel doesn't offer fallback text ...

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Number of people online
5 votes

This information is not displayed, nor should it be. The mere fact that phpBB shows it is a reason enough. Too many people mistake SE sites for forums; the interface should not reinforce this ...

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Double-voting on delete/undelete status of questions.
6 votes

An interesting point. This issue was debated on meta.SO: Why is it possible to vote for deletion/undeletion more than once? It seems that SE developers somehow neglected to implement the same check ...

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Should rep requirements for tag creation be higher?
17 votes

I agree; there is much less need for new tags on an established math Q&A site than on a technology-oriented Q&A site. On a tech Q&A, users are likely to bring up questions about a new ...

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Should a question with a flaw be deleted?
Accepted answer
17 votes

If the question has an upvoted answer, the issue is moot: you will not be able to delete it. Generally, you should refrain from deleting questions with a 0-score answer too (unless the answer is also ...

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Tag synonym: polar-coordinates | spherical-coordinates
2 votes

I am not convinced. Those are separate topics in calculus. For a typical calculus student asking questions on either of these topics, "$n$-dimensional polar coordinates" could as well be in Greek. ...

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Quicker way to browse through questions?
Accepted answer
3 votes

You can hide anything you don't want to see on SE pages with CSS rules. Try this bookmarklet to begin with: javascript:(function(){$('.excerpt,.tags,.started,.statscontainer,#sidebar,#header').css('...

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Asking a cross-discipline question
8 votes

Such a question would be on-topic here. However, another SE site Computational Science has a higher concentration of people working on cross-disciplinary problems between mathematics and programming. ...

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A proposal for a voting index
Accepted answer
13 votes

Generally speaking, Stack Exchange network (4.6 million users) does not customize its interface to individual user's preference. However, users are able to customize the interface themselves with ...

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What is the percentage of answers that have no upvote/downvote or not even a comment?
24 votes

Update. The original version of the answer did not take acceptances into account. Definition 1. An answer is unappreciated if it is not accepted, not commented upon, and has the score of 0. Some ...

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Answer acceptance rate
Accepted answer
12 votes

They tend to just up vote the answer. Users cannot vote until they have 15 points (and are registered). There is a good chance that the vote you see came from someone other than the new user. But ...

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Tag merging and synonyms
4 votes

Some candidates for pluralization. In the following two cases, pluralization would make tags more consistent with MO in addition to improving internal consistency of tags: limit should be limits ...

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Is a granted bounty and the reputation withdrawn when I delete my answer?
Accepted answer
2 votes

When an answer that received a bounty is deleted, all reputation including the bounty are revoked. (This may take 5 minutes to be visible.) The bounty is not given back to the user who awarded it. (...

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Would you ever favourite a question you down vote?
13 votes

From How do favorite questions work?: Marking a question as a favorite basically says that a particular user feels like watching that question. It's completely separate from the voting system ...

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Question deleted by Community
Accepted answer
4 votes

There are four types of automatic deletion of questions: after 9 days (certain closed questions), after 30 days (downvoted unanswered questions, also migration stubs), and after 365 days (0-score ...

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Browsing unregistered users?
2 votes

In practical terms: If you remember the user's display name, Google search username unregistered site:math.stackexchange.com/users will find the user. Usage example. If you interacted with the user ...

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What constitutes a day for the purposes of daily limits?
Accepted answer
6 votes

Depends on the particular limit. For reputation and badges, the UTC day is used (0:00-23:59 UTC time). See What is an SE "day"? When does each day start? For other reputation-related ...

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Browsing the answers by deleted users
10 votes

Yes. I put together the page Answers by deleted Math.SE users which organizers the answers by score, by user and by tags. How it works: Deleted users are listed in the decreasing order of the total ...

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Can I 'wear' more than one "hat" at the same time?
2 votes

As T. Bongers noted, one of the hats is actually three hats. But if you don't have that one, you can still wear multiple hats. It only takes a little Photoshopping. You can even wear the same hat ...

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Should we really have a reputation requirement for commenting?
12 votes

The commenting privilege was debated ad infinitum at meta.SO, and proposals to lower the threshold were declined, declined, and declined again. Keep in mind that math.SE is not an independent site ...

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What's the best fittest length for questions?
Accepted answer
7 votes

Don't worry about how your question fits the reader's screen; worry about how it fits their brain. Very short questions (1-2 lines) are almost universally bad (I exclude "evaluate this expression" ...

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Why was the soft question on "Maths at university" closed?
15 votes

The existing answers show why such questions should be closed. They are a random collection of personally preferred practices, opinions and anecdotes of little to no value, taken from a self-selected ...

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How to browse or search comments?
9 votes

If browsing through the comments list in your profile takes too long, you can search them through Data Explorer: Search your comments (or another user's comments, by entering their User Id) ...

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Are there any methods so that I can search for all users who earned the particular hat?
3 votes

Searchable leaderboard is available; however the search is by user name, not by hat name. I don't think this is something we could realistically put in the data explorer. It would be a bit of a ...

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Distribution of time to first answer in MathStackExchange?
Accepted answer
32 votes

I considered the distribution of (question)-(1st answer) time interval among the questions that received at least one answer. There are about 186600 of such questions in the SEDE database, ...

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Hat flew into the post!
8 votes

Interesting. Most other hats are positioned on the page relative to user's avatar (position: relative), but this one is given absolute coordinates, with respect to the upper left corner of the page: (...

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What is the [gradient-flows] tag for?
3 votes

If a tag is good enough for Tao, it's good enough for MSE. Seriously: although I'm not a fan of tags named after mathematical objects (rather than areas), this one appears to be used correctly: for ...

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