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math.RA2007
Prime Ideals of q-Commutative Power Series Rings
Edward S. Letzter, Linhong Wang
We study the "q-commutative" power series ring R:=k_q[[x_1,...,x_n]], defined by the relations x_ix_j = q_{ij}x_j x_i, for multiplicatively antisymmetric scalars q_{ij} in a field…
math.RA2007
Noetherian Skew Inverse Power Series Rings
Edward S. Letzter, Linhong Wang
We study skew inverse power series extensions R[[y^{-1};tau,delta]], where R is a noetherian ring equipped with an automorphism tau and a tau-derivation delta. We find that these e…