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Volume 10, Number 1, 2020, Pages 25-31                                                                DOI：10.11948/20180155
An application of Jack-Fukui-Sakaguchi Lemma
Mamoru Nunokawa,Janusz Sokol,Huo Tang
Keywords:Bazilevic function, close-to-convex functions, convex functions, starlike functions.
Abstract:
      We present some applications of Jack-Fukui-Sakaguchi Lemma which become sufficient criteria for a function to be in the class of strongly starlike, strongly close-to-convex or in the other classes.
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