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Galois and universal universal coverings of linear categories and fibre products

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 نشر من قبل Andrea Solotar
 تاريخ النشر 2010
  مجال البحث
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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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