关键词: homogeneous expansion, quasi-convex mapping of type B and order α, quasi-convex mapping, quasi-convex mapping of type A, quasi-convex mapping of type B

Abstract:

In this article, first, the sharp estimates of all homogeneous expansions for a subclass of quasi-convex mappings of type B and order α on the unit ball in complex Banach spaces are given. Second, the sharp estimates of all homogeneous expansions for the above generalized mappings on the unit polydisk in Cⁿ are also established. In particular, the sharp estimates of all homogeneous expansions for a subclass of quasi-convex mappings (include quasi-convex mappings of type A and quasi-convex mappings of type B) in several complex variables are get accordingly. Our results state that a weak version of the Bieberbach conjecture for quasi-convex mappings of type B and order α in several complex variables is proved, and the derived conclusions are the generalization of the classical results in one complex variable.

Key words: homogeneous expansion, quasi-convex mapping of type B and order α, quasi-convex mapping, quasi-convex mapping of type A, quasi-convex mapping of type B