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Dec
29
answered Showing that this is a group under matrix multiplication
Dec
29
comment Showing that this is a group under matrix multiplication
For closure: $(AB)^T X AB = B^T A^T X AB = B^T X B = X$.
Dec
27
comment Find $G(n)$ with $n \geq 1$
@qwerty89 Look here: meta.math.stackexchange.com/questions/3286/…
Dec
27
comment Find $G(n)$ with $n \geq 1$
@qwerty89 By accepting he meant that you click on the tick symbol next to the answer you want to accept.
Dec
26
comment Conceptualizing Inclusion Map from Figure Eight to Torus
Dear @Pierre-YvesGaillard: I will see to it.
Dec
26
comment Algebraic Structure of the Rose with Two Petals
@ManuelAraújo He asks for a topological group so it has to have inverses, too. So the previous version of your comment without the "However..." answers the question. : )
Dec
26
comment Algebraic Structure of the Rose with Two Petals
I think in the second paragraph you meant to write "topological group" rather than "topological space".
Dec
26
revised Introductory book on Topology
edited tags
Dec
26
comment Conceptualizing Inclusion Map from Figure Eight to Torus
@user21787 My pleasure! : )
Dec
26
revised Conceptualizing Inclusion Map from Figure Eight to Torus
added 224 characters in body
Dec
26
answered Conceptualizing Inclusion Map from Figure Eight to Torus
Dec
26
comment Evaluating $\int_0^1 \max (x, 1-x) dx$
@dato Look here is what it looks like: graph.
Dec
26
revised Evaluating $\int_0^1 \max (x, 1-x) dx$
added 57 characters in body
Dec
25
comment Trouble Understanding Elementary Functions.
@alok: That's because you're cutting of $x$ once on each side, so in total you cut it off twice.
Dec
25
answered Trouble Understanding Elementary Functions.
Dec
25
comment Question Based On Mathematical Modeling [Applied Functions]
@alok Yes, exactly! : ) But be careful: the box is open and so doesn't have a top and so there are only 5 sides.
Dec
25
answered Question Based On Mathematical Modeling [Applied Functions]
Dec
25
revised How to find the elements of $S_n$?
added 13 characters in body; edited title
Dec
25
answered How to find the elements of $S_n$?
Dec
23
revised Is $\mathbb Q_r$ algebraically isomorphic to $\mathbb Q_s$ while r and s denote different primes?
added 12 characters in body; edited title