New answers tagged

2

Reopened. I would like to put forward Model built in Gödel's completeness theorem for reopening. This question is somewhat vague (as the OP admits), but I think is (i) clear enough to admit a good answer (I have one in mind) and (ii) the sort of question which is difficult to clarify further until one already knows the answer. Ultimately, although it could ...


0

Go to their chat user page, and invite them, or wait for them to showup ... basically your only options.


2

Reopened Request to reopen Derive an atlas of Monge patches for a surface in 3D Since the votes to close (without any comments), I've added links to sources and multiple links to material that motivates the question. I've also clarified what would constitute an answer to the question.


6

Let us create here a community wiki answer to collect resources on this topic elsewhere on the web. Related posts on TeX Stack Exchange: What is the status of generating LaTeX from handwriting (i.e., OCR)? (August 2010) How to convert PDF to (La)TeX? (January 2011) Image equation to TeX (May 2013) Possible to Convert Math in Picture into LaTeX? How? (...


13

In general, yes, points gained on answers that get deleted because the question gets deleted are lost. Following an undeletion the points are restored. However, if your post satisfies both of: has score at least three was visible1 on the site for at least 60 days prior to deletion then you get to keep the points. See this blog post by Josh Heyer, aka ...


17

Here are three options. Just make the edit. Better: make the edit, and leave a comment thanking the other user for drawing your attention to the problem. Best (in my opinion): make the edit, and also edit into your question a word of thanks to the user for pointing out the problem. This way the user can delete the comment, and no one gets confused about ...


3

To make my comments into an answer: Firstly, you can define it manually, so \operatorname{sech}(x) renders as $\operatorname{sech}(x)$. A more fancy way is to put \DeclareMathOperator{\sech}{sech} somewhere in your post, and then \sech will work everywhere in the post. For example, I'll declare the operator (invisibly) here: $\DeclareMathOperator{\sech}{...


1

He wasn't being mean. MathOverflow is meant for specialized research level material. Mathematics is 99+% definitions, and implications. Evaluate $ \ln(\zeta(e^s))=0 $ for $s\in\Bbb C.$ suggest you don't know https://en.m.wikipedia.org/wiki/Complex_logarithm namely that log is multivalued on the complex plane.


10

This more-or-less summarizes some of the stuff which has already been said in the comments. If I understood correctly, the OP is asking about getting indices above/below the sign for integral or sum. I hope this answers the question at least partially. Probably the best thing to do is to show some examples: In the inline mode we can write $\sum_{n=0}^\...


4

In order to get the preferred notation in accordance with ISO 80000-2, use $$\sum\limits_{i = 1}^n {a_i}$$ $$\sum\limits_{i = 1}^n {a_i}$$ However, the following notations are also used $$\sum\nolimits_{i = 1}^n {a_i}$$ $$\sum\limits_i {a_i}$$ $$\sum\nolimits_i {a_i}$$ $$\sum {a_i}$$ $$\sum\nolimits_{i = 1}^n {a_i}$$ $$\sum\limits_i {a_i}$$ $$\sum\...


3

Kindly, don't hide my this legal inquiry like so many other topics of mine that had been hidden in so many mathematical sections at SE where not a single convincing reason was provided by all the moderators who deliberately have hidden so many other true proven discoveries of mine and since many years as well Nobody has hidden any true discoveries of yours. ...


3

Congratulations Pedro Tamaroff for getting into the 100K club.


1

Proposal: add a tag for exponential families Rationale: I've asked at least a couple of questions now that I originally tagged with exponential-family, but each of these were edited to remove the tag. However, I think such a tag deserves to exist, because the concept of an exponential family is absolutely crucial to a number of topics in statistical ...


-3

Proposal: Cancel the synonym complex-analysis and holomorphic-functions tags The holomorphic-function tag synonym was proposed in May 2016. It was approved in March 2019. (Information thanks to Martin Sleziak) Currently there are 6,698 questions about complex-analysis and 4689 questions about holomorphic-functions, it seems to me that would be ...


1

Lets see, Potential to cite later = proof you were first. Questions and Answers no longer are creators property by site decorum. Copyright notice, is a way to be marked as spam as you're simply avertizing your own services. If the answer was simply a rant, like your comments, it has potential to be marked as not an answer. If you don't believe the ...


2

Check out The Pearl Dive chatroom! In this chatroom, someone who wants a bounty placed somewhere can explain why and others evaluate if they want to place a bounty. Not only is your idea a great one, but others think so too - and created this chatroom for people like you!


9

Proposal: Remove gre-exam, gmat-exam. These are meta tags with very bare-bones tag wikis. Furthermore, there aren’t any other tags for important math exams, i.e. the IMO or USAMO, so why should we make an exception for these two?


4

In the rare cases where a GIF aids the post’s comprehensibility better than a still image could, then the GIF should remain. I’d argue your question is an example of this, although MathJax would’ve been better, had the asker tried to write the question down. Otherwise, I believe we should either make the images still, or remove them altogether.


0

Please create the tag "realizability" for questions regarding realizability as the term is used by researchers like Kleene, Kreisel, Troelstra and also in more modern work on proof theory. Looking through posts that use the word "realizability", the term is sometimes used to refer to the term from proof theory, and sometimes in a seemingly colloquial manner ...


0

In the past week or so, I edited the tag-wiki for ENT to make it far less wishy-washy that primitive roots and quadratic residues were NT and everything before that in a typical class or textbook are ENT. (It's not quite easy vs. non-easy. For instance, Pythagorean triples are the solutions to a non-linear Diophantine equation and therefore fall under NT. ...


0

I believe that, although most of the times only one of the tags should be used, there are situations where both are appropriate. Consider, for example, this highly upvoted question. OP asks a question involving only prime numbers and elementary arithmetic: Definition: A positive integer $n$ is called interesting if it has a prime factorisation $n=pq$ with ...


-7

Proposal: Merge probability and probability-theory tags. The idea behind having two tags is to divide basic and advanced probability questions, but it does not work and I believe it couldn't work. It is better to have single probability tag and use additional tags like combinatorics, measure-theory, etc. PS: Downvotes show that probability-theory is like a ...


0

Yes and No. Keeping an incorrect answer prevents the asker from getting the correct answer as people won't see it in the unanswered queue, so for that reason alone the answer should be removed. However, there may be times in which a minor error in an answer once pointed out in comments or via an edit makes the answer good enough for the asker. Ultimately ...


21

Resolved. collatz renamed to collatz-conjecture. Proposal: Rename collatz to collatz-conjecture. Although Lothar Collatz is most known for the $3x+1$ problem (the Collatz Conjecture), I don’t think their names should be used interchangeably. Furthermore, the latter tag has a more informative name. I posted this in the last Tag Management, but I only got ...


3

StackExchange Data Explorer is your friend! https://data.stackexchange.com/math/query/779357/excavator-badge (I am guessing this is the search you want....)


11

Proposal: Create the tag eulerian-numbers. The Eulerian number $A(n,k)$ is the number of permutations in $S_n$ with exactly $k$ descents, and it is an important combinatorial object. Searching for "Eulerian numbers" is:q returns around 30 legitimate hits, which is a worthwhile number of questions to have a tag attached, in my opinion. I had also raised ...


8

When someone points out that an answer of mine is wrong I usually delete it. But if it's wrong in an interesting or useful way I edit it to say so and leave it. Here's one example: Symmetry group of a cube: $O_h \cong O \times C_2$ . I don't know whether it was accepted before or after my edit.


1

9498 new users less than 10, someone can get there via giving bounties though. Others may be known spam or useless accounts ( one account I saw today, actually states on its profile that it's being used to upvote another account even), If you can't net 2 upvote ( or $n+2$ if you've gotten $5n$ downvotes) maybe you deserve to stay low. After all that's an ...


31

Regarding your question about keeping flawed answers: there are several reasons people delete their answers once a fundamental flaw has been pointed out: the question will not appear in the Unanswered queue if it has an upvoted incorrect answer, so deleting the flawed approach allows the question to receive more attention; the answer author may want to fix ...


6

Unless the omission made the question trivial, and you didn't see it within a few minutes it is probably better to ask a different question. If there were only one answer, an option would also be to ask for the opinion of the answerer whether they mind updating their answer. When looking for examples of some phenomenon such an update may not tax the ...


7

It is unfair to those who answered your question to change it now to a different question. So, ask a new question, with the extra assumption and a link to the previous question (as I did here).


12

As mentioned in the comments on 24 March triangle has been renamed as triangles, so all the badges that the users previously had in triangle were awarded simultaneously on the next day as triangles badges. I might be mistaken, but I don't think anyone has earned a silver rectangles nor quadratic-residues tag badge (with a square icon) nor a gold circles ...


1

If you just want to make the fraction smaller, you can write: \tfrac M N $$ \tfrac M N \quad \text{versus} \quad \frac M N $$


Top 50 recent answers are included