GENERALIZATION CLASS OF CERTAIN MEROMORPHIC UNIVALENT FUNCTIONS WITH POSITIVE COEFFICIENTS

  • Cho, Nak Eun (DEPARTMENT OF MATHEMATICS, NATIONAL FISHERIES UNIVERSITY OF PUSAN) ;
  • Qwa, Shigeyoshi (DEPARTMENT OF MATHEMATICS, KINKI UNIVERSITY) ;
  • Lee, Sang Hun (DEPARTMENT OF MATHEMATICS, KYUNGPOOK NATIONAL UNIVERSITY) ;
  • Altintas, Qsman (DEPARTMENT OF MATHEMATICS, HACETTEPE OF MATHEMATICS)
  • Published : 1989.12.20

Abstract

A generalization class $\sum_{P}$(${\alpha}$, ${\beta}$, ${\gamma}$) of certain meromorphic univalent functions with positive coefficients is introduced. The class $\sum_{P}$(${\alpha}$, ${\beta}$, ${\gamma}$) is a generalization of the class which was stuied by N.E. Cho, S.H. Lee and S. Qwa [1]. The object of the present paper is to prove some properties of functions in the class $\sum_{P}$(${\alpha}$, ${\beta}$, ${\gamma}$).

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