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Johannes Huisman's user avatar
Johannes Huisman's user avatar
Johannes Huisman's user avatar
Johannes Huisman
  • Member for 6 years, 10 months
  • Last seen more than a week ago
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36
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11
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41
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All Questions Answers
Score Newest
answer
12
Quotient of solid torus by swapping coordinates on boundary
Dec 22, 2021
answer
8
Polynomials with the same values set on the unit circle
Jan 25, 2016
answer
8
Hodge map and the Cohomology Ring of a Riemannian Manifold
Jan 27, 2016
answer
8
Regarding the surgery construction in "A procedure for killing homotopy groups of differentiable manifolds" by Milnor
Jan 24
answer
7
Is $\mathbb{C}^n\setminus V(f)$ homotopy equivalent with a "large ball complement"?
Dec 12, 2018
answer
6
Conceptual proof of classification of surfaces?
Feb 20, 2020
answer
5
Link between the hairy ball theorem and the fundamental theorem of algebra
May 2, 2016
answer
5
Ways to prove the fundamental theorem of algebra
May 3, 2016
answer
5
Inequivalent free $\Bbb Z/n\Bbb Z$-actions on orientable compact bordered surface
Jan 2
answer
5
Characterization of a non-trivial non-peripheral element of the free homotopy classes of a compact bordered surface
Sep 28
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50
Prove that if V is finite dimensional then V is even dimensional?
10
A kind of converse to the Jordan curve theorem
10
Tangent bundle of sphere as a complex manifold
8
A ring isomorphic to a proper subring of itself
7
If the cubic polynomial with rational coefficients $x^3+ax^2+bx+c$ has a double root, the root is rational.

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