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Gasper, G. (1969) Nonnegative Sums of Cosines, Ultraspherical and Jacobi Polynomials. Journal of Mathematical Analysis and Applications, 26, 60-68.
https://doi.org/10.1016/0022-247X(69)90176-0

has been cited by the following article:

• TITLE: Bounded Turning of an m-th Partial Sum of Modified Caputo’s Fractional Calculus Derivative Operator

  AUTHORS: Ajai P. Terwase, S. Longwap, N. M. Choji

  KEYWORDS: Analytic Functions, Close-to-Convex, Bounded Turning, Univalent

  JOURNAL NAME: Open Access Library Journal, Vol.7 No.3, March 27, 2020

  ABSTRACT: In this article, we consider subclasses of functions with bounded turning for normalized analytic functions in the unit disk, we investigate certain conditions under which the partial sums of the modi?ed Caputo’s fractional derivative operators of analytic univalent functions of bounded turning are also of bounded turning.