Let V be a comodule with a right coaction t:VVA of a coalgebra A. An element vV is right coinvariant if

t(v)=v1IA. (1)

The set of coinvariants of A is a sub-comodule with the trivial coaction of A. The sub-comodule of right (or left) coinvariants of V is sometimes denoted by VcoA (or VcoA).

Title coinvariant
Canonical name Coinvariant
Date of creation 2013-03-22 13:57:40
Last modified on 2013-03-22 13:57:40
Owner mhale (572)
Last modified by mhale (572)
Numerical id 5
Author mhale (572)
Entry type Definition
Classification msc 16W30