DYNAMICAL SYSTEMS AND COMMUTANTS IN CROSSED PRODUCTS
DYNAMICAL SYSTEMS AND COMMUTANTS IN CROSSED PRODUCTS
In this paper we describe the commutant of an arbitrary subalgebra $A$ of the algebra of functions on a set $X$ in a crossed product of $A$ with the integers, where the latter act on $A$ by a composition automorphism defined via a bijection of $X$. The resulting conditions which …