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Johannes Huisman

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

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43 Prove that if V is finite dimensional then V is even dimensional? Jun 17 '16
11 Does an abelian subgroup inject into the abelianisation of the whole group? May 20 '16
9 A kind of converse to the Jordan curve theorem Jan 26 '16
7 Tangent bundle of sphere as a complex manifold May 14 '16
6 If the cubic polynomial with rational coefficients $x^3+ax^2+bx+c$ has a double root, the root is rational. May 10 '16
6 Can $\mathbb{Z}/6\mathbb{Z}$ act freely and properly discontinuously on $\Sigma_4$? May 29 '16
6 Every compact semi-simple Lie group has finite center May 31 '16
5 What is an “algèbre augmentée sur un corps?” (EGA I) May 31 '16
5 Entire function $f$ and a function $g = \overline{f(\bar z)}$ Jun 17 '16
4 On the proof of that fixed point set of an involution is a submanifold Jun 3 '16
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