Functions of a complex variable
1. A new subclass of harmonic mappings with positive coefficients

A. R. Haghighi; N. Asghary; A. Sedghi

Volume 08, Issue 03 , Summer 2019, , Pages 159-165

Abstract
  ‎Complex-valued harmonic functions that are univalent and‎ ‎sense-preserving in the open unit disk $U$ can be written as form‎ ‎$f =h+\bar{g}$‎, ‎where $h$ and $g$ are analytic in $U$‎. ‎In this paper‎, ‎we introduce the class $S_H^1(\beta)$‎, ...  Read More

Functions of a complex variable
2. Transformations computations‎: ‎Power‎, ‎Roots and Inverse

M. Ghorbanzadeh; H. Kamali; A. Mansoori

Volume 07, Issue 01 , Winter 2018, , Pages 21-38

Abstract
  ‎This paper presents some results of an annihilated element in Banach algebra‎, ‎and in specific case‎, ‎for any square matrix‎. The developed method significantly improves the computational aspects of transformations calculus and especially for finding powers and roots of any ...  Read More