
Let \(\mu\) denote the class of functions \(f(z)={1\over z}+ \sum^\infty_{n=1} a_nz^n\) analytic and univalent in the punctured unit disk \(\Delta\setminus\{0\}\). If \(f\in\mu\) and \(\sum^\infty_{n=1} n|a_n|\leq 1\), then \(f\) is meromorphically starlike (that means that \(\text{Re }zf'(z)/f(z)< 0\) \((z\in\Delta\setminus\{0\})\)). Other results with infinite sum of coefficients of \(f\in\mu\) are obtained.
Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.), Hadamard products (or convolution), Applied Mathematics, meromorphically starlike, operators, Analysis
Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.), Hadamard products (or convolution), Applied Mathematics, meromorphically starlike, operators, Analysis
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