22,187 reputation
42867
bio website ie.linkedin.com/in/aymanh
location Dublin, Ireland
age
visits member for 3 years, 7 months
seen 2 mins ago

Senior software engineer at Google. B.Sc. and M.Sc. in Computer Science, Software Engineering. Studying for a M.Sc. in Mathematics.


11h
comment Programming string in math
@jcubic I don't understand the question. What do you mean by language theory? If you're looking for the analogue of string in formal languages, then it's called a word.
11h
comment Programming string in math
Strings are called "words" in formal languages. Check out Wikipedia.
2d
revised Calculating $\int_0^\pi \sin^2t\;dt$ using the residue theorem
Please don't use \displaystyle in titles; it uses too much vertical space on the homepage. Thanks
Jul
26
comment The set of points where two continuous functions agree is closed.
I think it was fine. I just got confused for a second and thought we were talking about a union.
Jul
26
comment mathematics solve
How is the supermarket topologized?
Jul
26
comment If $p:E \to B$ is a covering map, and if $E$ is compact, prove that $p^{-1}(b) $ is finite for all $b \in B$.
This assumes that singletons are closed, no?
Jul
26
comment Show that a star convex set $X \subset \mathbb{R^n}$ is simply connected.
Since constant maps are continuous, every space retracts to a point. This doesn't help much. What you should be looking for is a deformation retract.
Jul
26
answered Fundamental group of quotient of $S^1 \times [0,1]$
Jul
26
awarded  algebraic-topology
Jul
25
comment Question about $\pi_0(X)$
@GeorgesElencwajg If $X$ is just a discrete space, any group structure on $\pi_0(X, x_0)$ is equally valid. There is no natural choice. This is an example of what I'm trying to say.
Jul
25
comment Homotopy classes of maps from the projective plane to $S^1 \times S^3$
@msteve Yes. All such maps are nullhomotopic.
Jul
25
answered Question about $\pi_0(X)$
Jul
25
comment Atiyah-Macdonald 2.3
Did you solve exercise 2.15 on page 27? Once you solve it, the problem here becomes an immediate application of the exercise and proposition 2.14.
Jul
25
answered Homotopy classes of maps from the projective plane to $S^1 \times S^3$
Jul
23
comment To prove the sum is convergent
This has been asked many times before. Use Cauchy-Schwarz.
Jul
23
comment Prove that intersection of connected spaces is connceted.
@ᴊᴀsᴏɴ Look carefully. It is a union in the book.
Jul
21
comment How to evaluate $\sum_{n=1}^{38}\sin\left(\frac{n^8\pi}{38}\right)$
@Mercy Yeah, misread. Never mind. I'll delete my comment.
Jul
21
revised How to evaluate $\sum_{n=1}^{38}\sin\left(\frac{n^8\pi}{38}\right)$
edited title
Jul
21
comment Extending cellular maps between aspherical complexes
@Lano You're right. I missed this requirement. Edited in now. Thanks.
Jul
21
revised Extending cellular maps between aspherical complexes
added 233 characters in body