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math.RA1998
Polycyclic-by-finite group algebras are catenary
Edward S. Letzter, Martin Lorenz
We show that group algebras kG of polycyclic-by-finite groups G, where k is a field, are catenary: Given prime ideals P and P' of kG, with P contained in P', all saturated chains o…
math.RA1998
K_0 of invariant rings and nonabelian H^1
Martin Lorenz
We give a description of the kernel of the induction map K_0(R)->K_0(S), where S is a commutative ring and R is the ring of invariants of the action of a finite group G on S. The d…