A CERTAIN SUBCLASS OF MULTIVALENT ANALYTIC FUNCTIONS WITH NEGATIVE COEFFICIENTS FOR OPERATOR ON HILBERT SPACE

Abbas Kareem Wanas


Abstract


By making use of the operators on Hilbert space, we introduce and study
a subclass Ak of multivalent analytic functions with negative coecients. Also we obtain some geometric properties.

DOI : http://dx.doi.org/10.22342/jims.21.2.228.77-82

 


Keywords


Hilbert space; analytic function; convex set; extreme points.

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p-ISSN:2086-8952e-ISSN:2460-0245