Open AccessOn descent theory for distributors
Author(s) -
Valdis Laan,
Pille Penjam
Publication year - 2007
Publication title -
acta et commentationes universitatis tartuensis de mathematica./acta et commentationes universitatis tartuensis de mathematica
Language(s) - English
Resource type - Journals
eISSN - 2228-4699
pISSN - 1406-2283
DOI - 10.12697/acutm.2007.11.02
Subject(s) - functor , descent (aeronautics) , mathematics , multiplication (music) , equalizer , pure mathematics , computer science , combinatorics , physics , telecommunications , meteorology , channel (broadcasting)
We give necessary and sufficient conditions for equalizer preservation of the functor of tensor multiplication by a distributor and some sufficient conditions for a functor between small categories to be an effective descent functor.