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Dec
15
comment Is a line just an infinitely large circle?
To the closers and other downvoters, please consider that although it is stated in layman's terms, the idea behind it is a deep question about Moebius transformations / stereographic projection (or if you think I'm stretching, at least basic topology). In particular, even if you don't believe the question is stated well, it could inspire a very good answer.
Dec
15
comment Is a line just an infinitely large circle?
Hey, I think this is actually a pretty good question.
Dec
15
revised Classifying complex conics up to isomorphism as quotient rings of $\mathbb{C}[x,y]$
edited body; edited tags; edited title
Dec
15
revised Strategies to study apart from “books cover to cover.”
deleted 1 character in body
Dec
15
revised Strategies to study apart from “books cover to cover.”
deleted 9 characters in body
Dec
15
answered Strategies to study apart from “books cover to cover.”
Dec
14
comment Non abelian group of order 40
Oh wait, you're given that it's a direct product. Just compute the centers of each Sylow subgroup then.
Dec
14
comment Non abelian group of order 40
Show the Sylow $5$-subgroup is normal, then compute the kernel of a Sylow $2$-subgroup acting on the Sylow $5$-subgroup.
Dec
11
answered Don't see the point of the Fundamental Theorem of Calculus.
Dec
11
comment Ways to write “50”
@RghtHndSd That still means it's too broad, though. (I would also argue that it is too localized, if that were still a thing.) There are lots of good questions which do not fit the format of this site. But, again, the decision is up the the community.
Dec
11
reviewed Approve Separability, total boundness and topological equivalence of metrics
Dec
11
reviewed Reject Eigenvectors of real symmetric matrices are orthogonal
Dec
11
reviewed Leave Closed Under what condition(s) is the set of all isolated point in a 2nd countable metric space is empty?
Dec
11
reviewed Close Stuck on Induction Proof
Dec
11
reviewed Close Combinatorics-Table Arrangement
Dec
11
reviewed Close one to one onto and composition functions
Dec
11
reviewed Leave Open Union and intersections
Dec
11
answered What are the normal subgroups of $S_4\times S_3$
Dec
11
revised Why do some mathematical ideas seem counter-intuitive?
added 34 characters in body
Dec
11
comment Find the Locus of the Orthocenter
@ADG, I have added TeX to your post. Please make sure I've translated everything correctly, particularly the parts which are off camera.