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Results tagged with group-cohomology
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user 4794
In mathematics, group cohomology is a set of mathematical tools used to study groups using cohomology theory, a technique from algebraic topology. Analogous to group representations, group cohomology looks at the group actions of a group G in an associated G-module M to elucidate the properties of the group.
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Universal cover of SL2(R) admits no central extensions?
The answer should be negative, because the $K_2$ of the reals is humongous.
That is, there are nontrivial central extensions. (Please do not ask a question and then explain its negation.)
Algebraic $K …
- 3,504