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THAMMASAT INTERNATIONAL JOURNAL OF SCIENCE & TECHNOLOGY


Volume 24, No. 04, Month OCTOBER, Year 2019, Pages 144 - 152


Fekete szego problem for certain classes of analytic functions associated with petal type domain and modified sigmoid function

Sunday Oluwafemi Olatunji, Hemen Dutta


Abstract Download PDF

In this work, the authors studied the Fekete-Szegö problems for certain classes of analytic functions associated with petal type domain and modified sigmoid function. The initial coefficient bounds have been obtained and discussed the relevant connection to Fekete-Szegö inequalities. The results give birth to some corollaries.


Keywords

Analytic function, Univalent function, Subordination, Fekete-Szeg? inequalities, Modified sigmoid function, Petal type domain



THAMMASAT INTERNATIONAL JOURNAL OF SCIENCE & TECHNOLOGY


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