Mathematics
Joe S's user avatar
Joe S's user avatar
Joe S's user avatar
Joe S
  • Member for 8 years, 8 months
  • Last seen more than 8 years ago
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About

Studying math on my own for several years.

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-9
Why is it that people down vote an answer without even bothering to comment what is the problem?
Mar 31, 2015
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10
How to show $S^n$ is not contractible without using Homology..
7
Picturing Riemannian geometry on a surface as a flow
7
Stiefel-Whitney numbers of manifolds that are boundaries of non-smoothable manifolds
7
Stiefel Whitney numbers of a $3$- manifold are $0$
6
When is a vector field on a surface a Lie bracket

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