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Linear representations of algebras and groups, Lie theory, associative algebras, multilinear algebra.

14 votes
1 answer
561 views

Mednykh's formula for 2d manifold with boundaries? How to count principal G-bundles with pre...

Let S be a closed, orientable 2d manifold and G a finite group. Since a principal G-bundle over S is specified by maps $\phi : \pi_1(S) \rightarrow G$ modulo the adjoint action by G, the way to count …
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