Yusuke OKUYAMA

The Norm Estimates of Pre-Schwarzian Derivatives of Spiral-like Functions

Abstract

For a constant , a normalized analytic function on the unit disk is said to be -spiral-like if for any point in the unit disk. In this paper, for such a function , we shall present the optimal estimate of the norm of .

submission: October 30, 1998
revised: September 1, 1999
revised: December 26, 1999


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