Galois and universal universal coverings of linear categories and fibre products

Details Galois and universal universal coverings of linear categories and fibre products Galois and universal universal coverings of linear categories and fibre products

2010-12-15

arxiv.org/abs/1012.3434v1

Mathematics

Representation Theory

Scientific paper

Let $k$ be a commutative ring. We study the behaviour of coverings of
$k$-categories through fibre products and find a criterion for a covering to be
Galois or universal.

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