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xsnl

mathematician wannabe

interested in linear algebra over integers and nilpotence as phenomenon

55
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  • Moscow, Russia
  • Member for 1 year, 8 months
  • 174 profile views
  • Last seen 14 hours ago

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Top Posts (62) All Questions Answers | Votes Newest

11 Why is it that if a ring is simple, its center must be a field? Apr 1
6 Homomorphisms of $\mathbb{F}_2$ that preserve $aba^{-1}b^{-1}$ Mar 27
5 A group generated by $3$ elements such that the product of generators is in the centre Mar 27
4 Classification of homology 5-spheres Apr 27
4 G be a finite group and H be a non trivial proper subgroup of index 3, then G is not simple. Aug 19
3 If $G/\left(\mathbb{Z}/n\mathbb{Z}\right)$ is residually finite and $\left(\mathbb{Z}/n\mathbb{Z}\right)\leq Z(G)$, then $G$ is residually finite Aug 20
3 Pontryagin duality of finite groups Apr 24
3 Reference for group cohomology Mar 19
3 Cubic composition algebras May 25 '17
3 Discrete approximations of Riemannian manifolds and topological complexity Mar 16
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