A -algebra is said to have the homotopy lifting property if for all -algebras and , for every surjective -homomorphism and for every -homomorphism , any path of -homomorphisms starting at lifts to a path of -homomorphisms starting at . Blackadar has shown that this property holds for all semiprojective -algebras. We show that a version of the homotopy lifting property for asymptotic morphisms holds for separable -algebras that are sequential inductive limits of semiprojective -algebras. It also holds for any separable -algebra if the quotient map satisfies an approximate decomposition property in the spirit of (but weaker than) the notion of quasidiagonality for extensions.

生成讲解博客的中文版本

生成AI智能校验的中文版本