On $q$-commutative power and Laurent series rings at roots of unity

Edward S. Letzter, Linhong Wang, Xingting Wang

We continue the first and second authors' study of $q$-commutative power series rings $R=k_q[[x_1,\dots ,x_n]]$ and Laurent series rings $L=k_q[[x_1^{\pm 1},\dots ,x_n^{\pm 1}]]$,…