User Denis T - MathOverflow Meta

Denis T

Member for 7 years, 11 months
Last seen more than a week ago

Moscow, Russia

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About

looking at groups and spaces
trying to feel what is metric
and what it isn't
and what it should be

mostly doing math via sotto voce exegesis (i. e. not really doing anything)
also i like filtrations and localisations

email denis.thn[]gmail.com

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36

Mistakes in Bredon's book "Topology and Geometry"?

17

Is the decomposition of the homotopy type of a complex into a bouquet unique?

15

Why is it that if a ring is simple, its center must be a field?

14

Which abelian groups are $\varprojlim^1$ groups?

13

Example of a ring with non-finitely generated unit group?