Publication: On salagean type pseudo-starlike functions
Abstract
We construct two new subclasses of univalent functions in the open unit disk U = {z : vertical bar z vertical bar < 1 . For the first class ( pound lambda)(beta) of Salagean type lambda--pseudo-starlike functions, using the sigmoid function, we establish upper bounds for the initial coefficients of the functions in this class. Furthermore, for the second class ( pound lambda)(beta, phi) we obtain Fekete-Szego inequalities. The results presented in this paper generalize the recent work of Babalola.
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Keywords
Lambda-pseudo-starlike functions, Sigmoid function, Salagean derivative, Bazilevic functions, Coefficient bounds, Fekete-szego inequalities, Science & technology, Physical sciences, Mathematics
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