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.
14
This is by design. Votes on deleted posts do not count toward your daily limit. If you hit the limit after voting on $m$ posts, and $n$ of these posts get deleted for any reason before the end of the UTC day, you will be able to cast $m+n$ votes that day. See How does someone get to cast more than 40 votes in a day?
You may be able to observe the difference ...
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
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
Congratulations, you have hit the daily reputation cap. Tomorrow you will see that you've earned a shiny new badge if you haven't already.
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
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 by design. All comment actions are rate-limited, and actions that fall under the rate-limit are rejected immediately, before the system checks anything else (for example, what action you are trying to perform, or whether the comment has been deleted). This is to prevent any clever Denial of Service attacks, and is discussed in StackExchange podcast #...
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
They visited the 2 sites from different machines, and for users without an email - the hash is based on location.
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
Your post here (which I assume is the one you're referring to) was made CW (community wiki) due to your editing it 10 times: see here where the system recorded this occurring, and see here for the official explanation of the policy.
(now that the CW status has been removed, the record is no longer present)
Once a post is CW, it does not affect its owner's ...
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
@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{...
Only top voted, non community-wiki answers of a minimum length are eligible
