The Range of Variability of some Complex Functionals in The Generalized Caratheodory Class


Abstract in English

This paper presents a certain method to determine the range of variability of some functionals defined in Generalized Caratheodory Class ( i.e the class of analytic functions in the unit disk of the form: where is a non decreasing function on the interval such that ). It has been proved that the range of variability of functional where is a polynomial in , is the closed disc with and precisely determined . Also the range of variability of some other functional determined

References used

ALEKSANDROV,I. Boundary Values of Functional on the Class of Holomorphic Functions Univalent in a Circle. Sibirsk, Mat. Z. 4 , (1963),17-31
BABALOLA. T, K. O. OPOOL, O. Iterated integral Transforms of Caratheodory Functions and their Applications to Analytic and Univalent Functions. Tamking Journal of Mathemtics Volume 37, Number 4, 355-366, Winter 2006
BADDOUR,H. About the range of variability of linear functionals in Caratheodory Classe. Damascus univ.journal- No.28 – 1998

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