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19h
answered Let $(X, \mathfrak T)$ be a topological space and supposed that $A$ is a subset of $X$ then the Bd(A) is a closed set.
1d
revised How to generate integer random numbers that equal to another random number?
Improved formatting
2d
comment Normal Distribution Question
Welcome to Math.SE! I think you've misunderstood the point of the site. It exists to help you find your own solutions to problems, not just to answer arbitrary mathematics questions. You have a much better chance of getting an answer if you tell us why you're interested in the problem, what you've tried and where you've got stuck.
Apr
21
awarded  Good Answer
Apr
20
revised Finding cos(A + B) from sin(A + B) — a sequel
edited body
Apr
19
comment How to obtain a rectangle's side's positions if its origin isn't in its middle?
What information are you allowed to use, and what form do you want the output in? Perhaps a 'black box' example would help: give us some sample input and tell us what output you expect to receive.
Apr
19
comment How to obtain a rectangle's side's positions if its origin isn't in its middle?
Try and define more carefully what you mean by: collision, origin, origin point, side position. It's still not clear.
Apr
19
comment How to obtain a rectangle's side's positions if its origin isn't in its middle?
I've added the picture from your link. It's better to include pictures, source code etc. directly rather than linking to them as links might not always be active.
Apr
19
revised How to obtain a rectangle's side's positions if its origin isn't in its middle?
added 23 characters in body
Apr
19
revised How to obtain a rectangle's side's positions if its origin isn't in its middle?
Fixed punctuation/formatting
Apr
19
comment How to obtain a rectangle's side's positions if its origin isn't in its middle?
Hi, and welcome to Math.SE! Your question is very unclear at the moment. Consider updating it (maybe with some pictures and sample code) and you're more likely to get answers.
Apr
17
revised Showing that the moduli stack of triangles is equivalent to the quotient stack $[\tilde{T}/S_3]$
deleted 129 characters in body
Apr
17
revised Countably Infinite Collections of Sets
edited title
Apr
17
revised Showing that the moduli stack of triangles is equivalent to the quotient stack $[\tilde{T}/S_3]$
made it actually correct
Apr
17
awarded  Nice Answer
Apr
16
answered How do I show that the following map establishes a bijection between $\mathbb Q$ and $\mathbb Z \times \mathbb{Z}_{>0}$
Apr
16
awarded  Strunk & White
Apr
16
reviewed Edit Caden has 4/3 kg of sand which fills 2/3 ​​ of his bucket. How many buckets will 1kg sand fill?
Apr
16
revised Caden has 4/3 kg of sand which fills 2/3 ​​ of his bucket. How many buckets will 1kg sand fill?
added 417 characters in body
Apr
16
comment How many questions can I get wrong?
I downvoted, not because this is a bad answer, but because it's a bad question, and answering it encourages people to ask bad questions in the future.