# Tag Info

18

This is the result of a very recent change to the way answers enter that queue. Previously, the conditions were: the answer was posted at least 30 days after the question was asked; and the answer's author has at most 10 rep. It appears that condition (2) has been altered to the answer's author has at most 50 rep. As before, it doesn't matter how old ...

15

Perhaps you have earned 200 points on 150 days, but due to user removals, the number of days that show at least 200 points has been reduced. I believe that the badge counter remembers each day you've gotten at least 200, whereas the reputation page only counts the number of days that you are currently showing at least 200.

12

This is, in fact, correct behavior. Stretchy delimiters are centered on the "math axis" (which is a line at about the height of a minus sign), and extend equally above and below that axis. Fractions are placed so that their fraction line is on the math axis. So when a fraction has a denominator that is larger in height than the numerator (as in your case),...

12

You were only looking at the reputation earned during the current month: Click on the "all" to get cumulative reputation (modulo caching):

11

When a user (without the vote-to-close privilege) flags a question using one of the canned close reasons, the question will be placed in the Close Votes review queue (see MSE answer). Since that user cannot vote to close, the question will enter in the queue without any close votes. (If a user with the vote-to-close privilege flags a question using one of ...

11

A fairly recent article on ArsTachnica, regarding how using Gravatars can leak an email address has prompted us to make some changes to how we produce the gravatar hash (under certain circumstances). Looks like this happened here.

11

If you look at the reputation tab of the author of the currently accepted answer you can see that the answer was today first unaccepted (11:04:00), and later re-accepted (11:05:36). It is very likely that in between your answer was accepted, causing the badge criteria to be met, and the badge awarded to you (11:05:12). Congratulations. Your answer was ...

10

You are not supposed to write a greeting at the start of the question. There is a script in place that removes certain common forms of greetings (or at least what appears to be like one, there are rare false positives). Of course there are ways to fool the script, but you should not.

9

You got a recent vote on a CW answer to a very popular question, which brought your answer to a +5 score. This makes all the views on the question eligible for the impact counter. Which is why you have such impact. If someone downvotes that answer, the number will drop by a few hundred thousands. See also: Massive change in 'People Reached' ...

9

It is no longer possible to ask questions with an unregistered account on Mathematics Stack Exchange. The change was made on or about 10 Oct 2016, at least in part in because of the response to the feature request Let's require registration to ask a question (see Grace Note's answer to that question). (Users can still answer questions without being ...

9

The author of the question you linked has previously posted a question here, on the $18^{\text{th}}$ October. That question was roomba'd today, approximately an hour and a half after the question you linked was posted. Thus at the time they posted the linked question, the "new contributor" criteria were not satisfied. They are now, but if I understand the ...

8

This is kinda intentional; if you don't change anything, it feels odd to record a change record. Indeed: you can't edit the revision history, but in the general case, that is probably a good thing anyway. I'm not sure this is going to cause a real problem very often - or at least, it seems more likely to be misused by changing revision reasons. As a rule of ...

8

The words "they", "them", "their" are also commonly used as singular gender-neutral forms. See https://en.wikipedia.org/wiki/Singular_they Thus, the "them" there is intentional and not in error.

7

Jykri Lahtonen points out that community wiki posts do not count towards the threshold of 20 answers; Arthur Fischer points out that this is documented in the "Tag Badges" section of the Help Center > Badges page. Hovering over the total score for real-analysis questions (currently 135) on my profile page raises a hoverbox that says: Asked 2 non-wiki ...

7

They visited the 2 sites from different machines, and for users without an email - the hash is based on location.

7

I assume you mean this answer. Note that due to a significant number of edits, it was automatically made Community Wiki, and upvotes and accepts on Community Wiki answers confer no reputation.

7

The reputation cap affects only reputation you get from upvotes (and edits). The reputation you get from having your answer accepted, or bounties, is exempt. Getting a lot of answers accepted in a single day can take you far above the 200 point mark, ditto bounties.

7

Yes, because he's the OP. You can review suggested edits to your own posts when you are quick enough to get to it before others approve or reject it. According to this you get an inbox notification of suggested edits on your own post. The OP's vote is binding, so the OP can single-handedly approve or reject a suggestion.

7

You cannot delete it as it has two answers. You can only delete a question you asked if it has no answer or a unique answer that has not received any upvote at all, where "answer" means "answer post that is not deleted." Tangentially, I assume that the message you reproduced says "answer" not "ask."

7

This is because it is possible that a question can have five reopen votes from users with above 10k reputation even whilst it remains deleted. An old post on the main meta explains some reasons why this is allowed, so it is not a system bug. However, it is not possible to vote to close a question when it has already been deleted. As you have probably ...

7

The account was removed on purpose. Here is a list of its posts. (The last one was self-deleted.) Ways to split nonlinear ODEs in linear part + nonlinearity that may work https://math.stackexchange.com/questions/327080/constructin-a-pw-disjoint-sequence-of-sets-from-a-given-sequence-in-a-semiring $\left(0,1\right]\neq\biguplus_{k=1}^{n}\bigcap_{j=1}^{k}G_{... 7 The badge was awarded for a vote you cast for someone else's answer. You removed the vote literally one second after you cast it, which might be the cause for your confusion, though — as that means it's not recorded in your voting stats, as your screenshot shows. I'm marking this as status-bydesign since I'm thinking of the badge as an award for discovering ... 6 The link only exists once you have at least one helpful flag. The page exists it is: https://math.stackexchange.com/users/flag-summary/[YourUserID] 6 @AlexR's suggestion can be implemented using \label and \eqref macros in order to get links from within an equation to another equation (but only such links). E.g. $$\sin^2(\theta) + \cos^2(\theta) = 1\tag{1}\label{dpvc-1}$$ and then a link in the text: \eqref{dpvc-1} is due to the Pythagorean theorem, and$\$\cos^2(\eta) + \sin^2(\eta)-1 \stackrel{\eqref{...

6

The overall count includes your votes on deleted posts. The tab with details of your votes doesn't. Back in the days, the overall count did not include votes on deleted posts. That was changed last year: "Votes cast" should include votes on deleted contributions. One reason is that the votes cast by a user on deleted posts are still contributions ...

6

Does not seem like a bug. Edits done withing five minutes by the same user after posting or an initial edit are put together in one revision to avoid cluttering the revision history. (Except if somebody comments on a post in the interim. Then a new revision is created to avoid confusion over comments that refer to a part of the post that then gets changed.)...

6

Today, a new topbar was rolled out. One of the changes is the location of the site-switcher, which is now on the right. The Stack Exchange logo on the left now takes one to https:/stackexchange.com. The change is not universally loved.

Only top voted, non community-wiki answers of a minimum length are eligible