L. Grunenfelder et T. Kosir, KOSZUL COHOMOLOGY FOR FINITE FAMILIES OF COMODULE MAPS AND APPLICATIONS, Communications in algebra, 25(2), 1997, pp. 459-479
The Koszul cohomology for finite families of comodule endomorphisms is
used to study finite families of polynomials with operator coefficien
ts. in particular, we consider multiparameter eigenvalue problems.