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Mathematics
Joe S's user avatar
Joe S's user avatar
Joe S's user avatar
Joe S
  • Member for 9 years, 5 months
  • Last seen more than 3 years ago
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About

Studying math on my own for several years.

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11
How to show $S^n$ is not contractible without using Homology..
Apr 19, 2015
answer
8
Stiefel Whitney numbers of a $3$- manifold are $0$
May 19, 2015
question
7
Stiefel-Whitney numbers of manifolds that are boundaries of non-smoothable manifolds
Apr 17, 2019
question
6
Subsets of the reals when the Continuum Hypothesis is assumed false
Feb 3, 2016
question
4
Vector Bundles over Spheres
Jul 17, 2015
answer
4
To what extent is the global angular form well-defined?
Mar 23, 2015
question
3
Analogue of the Euler Class of a Circle Bundle and the Global Angular Form
Mar 19, 2015
answer
3
Proving that the quotient manifold is orientable if and only if the group action is orientation-preserving
Mar 22, 2015
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3
Torus diffeomorphic to $S^1\times S^1$.
Mar 23, 2015
answer
3
The Fundamental group of Klein Bottle
Mar 29, 2015
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7
Picturing Riemannian geometry on a surface as a flow
6
When is a vector field on a surface a Lie bracket
5
Conformal structure determined by principal curvatures
5
poincare hopf theorem and the index of a vector field