摘要
Let 0 →I → A →A/I →0 be a short exact sequence of C^＊-algebras with A unital. Suppose that I has tracial topological rank no more than one and A/I belongs to a class of certain C^＊-algebras. We show that A has trazial topological rank no more than one if the extension is quasidiagonal, and A has the property （P1） if the extension is tracially quasidiagonal.
Let 0→I→A→A/I→0 be a short exact sequence of C*-algebras with A unital. Suppose that I has tracial topological rank no more than one and A/I belongs to a class of certain C*-algebras. We show that A has tracial topological rank no more than one if the extension is quasidiagonal, and A has the property (P1) if the extension is tracially quasidiagonal.
基金
supported by National Natural Science Foundation of China (Grant No. 11071188)
