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math.RA2009
Noncrossed Product Matrix Subrings and Ideals of Graded Rings
Johan Öinert, Patrik Lundström
We show that if a groupoid graded ring has a certain nonzero ideal property and the principal component of the ring is commutative, then the intersection of a nonzero twosided idea…
math.RA2009
Hilbert 90 for Algebras with Conjugation
Patrik Lundström
We show a version of Hilbert 90 that is valid for a large class of algebras many of which are not commutative, distributive or associative. This class contains the nth iteration of…