An action of Z(l) by automorphisms of a k-graph induces an action of Z(l) by automorphisms of the corresponding k-graph C*-algebra. We show how to construct a (k + l)-graph whose C*-algebra coincides with the crossed product of the original k-graph C*-algebra by Z(l). We then investigate the structure of the crossed-product C*-algebra.
机构:
St Lawrence Univ, Math Dept, 118 Valentine Hall,23 Romoda Dr, Canton, NY 13617 USASt Lawrence Univ, Math Dept, 118 Valentine Hall,23 Romoda Dr, Canton, NY 13617 USA