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Ben

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

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  • Member for 6 years, 2 months
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  • Last seen Sep 15 at 16:06

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9 There is only one interesting measure space Feb 4 '15
9 How is going around the circle once in each direction homotopic to a point? Jan 30 '19
8 Proof that the solutions are algebraic functions Nov 29 '15
6 $H,K$ be subgroups of an infinite abelian group $G$ such that $K \subseteq H$ and $G \cong K$ , then is it true that $G\cong H$ ? Aug 29 '16
6 Local homeomorphisms which are not covering map? Jul 2 '15
6 What is $Ext^1(\overline{\mathbb{Q}}^\times, \overline{\mathbb{Q}})$ in abelian groups? Jan 21 '19
6 The action of the group $\Gamma=\mathbb{Z}$ on the manifold $\mathbb{C}^n-\{0\}$ Jan 24 '19
5 $ \operatorname{Ext}_{k[x]}^n(k,k)$ for a field $k$ Jan 19 '19
5 Every ideal is contained in a prime ideal that is disjoint from a given multiplicative set Nov 23 '14
5 Why does Hartshorne require that a scheme is separated for defining Weil Divisors? Mar 11 '16
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