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Justin Young

Apparently, this user prefers to keep an air of mystery about them.

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14 What tells rational cohomology about integral cohomology? Oct 27 '11
13 CW complex structure of the projective space $\mathbb{RP}^n$ Sep 12 '12
13 Is closure of convex subset of $X$ is again a convex subset of $X$? Sep 26 '12
13 Why do we ask that condition in Kan complex? Mar 25 '14
10 Proving that a subgroup of a finitely generated abelian group is finitely generated Apr 26 '12
10 Explicit isomorphism $\tilde{H_n}(X)\simeq \tilde{H}_{n+1}(SX)$. May 2 '12
7 show $2^{2^n} + 1 \equiv 2 \pmod{2^{2^m} + 1} $ with $0<m<n$ May 22 '12
7 Chern Classes and Stiefel-Whitney Classes May 1 '12
6 Show that for any positive integer $n$ there is $x \in [0,1-\frac{1}{n}]$ for which $f(x) = f(x+\frac{1}{n})$ Feb 23 '16
6 Prove that $\left\{(x,y)\in \mathbb R^2: \ x^2-xy+y^2-1=0\right\}$ is a closed and bounded set. Apr 18 '17
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