Title of article
Subclasses of harmonic mappings defined by convolution
Author/Authors
Ali، نويسنده , , Rosihan M. and Stephen، نويسنده , , B. Adolf and Subramanian، نويسنده , , K.G.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
5
From page
1243
To page
1247
Abstract
Two new subclasses of harmonic univalent functions defined by convolution are introduced. The subclasses generate a number of known subclasses of harmonic mappings, and thus provide a unified treatment in the study of these subclasses. Sufficient coefficient conditions are obtained that are shown to be also necessary when the analytic parts of the harmonic functions have negative coefficients. Growth estimates and extreme points are also determined.
Keywords
harmonic functions , convolution , Univalent functions
Journal title
Applied Mathematics Letters
Serial Year
2010
Journal title
Applied Mathematics Letters
Record number
1527334
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