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Results tagged with ra.rings-and-algebras
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user 3473
Non-commutative rings and algebras, non-associative algebras, universal algebra and lattice theory, linear algebra, semigroups. For questions specific to commutative algebra (that is, rings that are assumed both associative and commutative), rather use the tag ac.commutative-algebra.
5
votes
1
answer
203
views
3-cocycles on outer automorphism groups
Given a group $G$, the outer automorphism group $Out(G)$ acts on the center by $Z(G)$ by lifting an outer automorphism to an actual automorphism and evaluating this on elements of $Z(G)$. What is clas …
- 4,519
5
votes
Simplicial set construction of the classifying space
I know this description from following paper of Segal. He doesn't mention Milgram there, but relates it to Milnor's join construction. Also, $G$ is allowed to be any topological group, no need for dis …
- 4,519