篇名 | Applications of Di erential Subordination for Functions with Fixed Second Coecient to Geometric Function Theory |
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卷期 | 29:2 |
作者 | See Keong Lee 、 V. Ravichandran 、 Shamani Supramaniam |
頁次 | 267-284 |
關鍵字 | Analytic functions 、 Starlike functions 、 Convex functions 、 Subordination 、 Fixed second coecient |
出刊日期 | 201305 |
The theory of second order di erential subordination of S. S. Miller and P. T. Mocanu [Di erential Subordinations, Dekker, New York, 2000] was recently extended to functions with xed initial coecient by R. M. Ali, S. Nagpal and V. Ravichandran [Second-order di eren- tial subordination for analytic functions with xed initial coecient, Bull. Malays. Math. Sci. Soc. (2) 34 (2011), 611{629] and applied to obtain several generalization of classical results in geometric function theory. In this paper, further applications of this subordination theory is given. In particular, several sucient conditions related to starlike- ness, convexity, close-to-convexity of normalized analytic functions are derived.