Results 101 to 110 of about 642 (133)

On meromorphic and starlike functions

Complex Variables and Elliptic Equations, 2015
We consider sufficient conditions for and to be in , where in . We apply it to the meromorphic starlike functions.
Mamoru Nunokawa, Janusz Sokół
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Certain subclasses of meromorphic harmonic starlike functions

Integral Transforms and Special Functions, 2008
In a previous paper M.-P. Chen, Z.-R. Wu and Z.-Z. Zou [M.P. Chen, Z.-R. Wu and Z.-Z. Zou, On functions α-starlike with respect to symmetric conjugate points, J. Math. Anal. Appl. 201 (1996) 25–34] developed a method, using some operators, to deal with functions analytic and starlike with respect to symmetric conjugate points in the unit disc.
Bostanci, H., Ozturk, M.
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Starlikeness properties of meromorphic $m$-valent functions

Publicationes Mathematicae Debrecen, 1999
Summary: We find conditions regarding the values of \(\beta\) such that \(F(z)\) given by \[ I^m_{\gamma,\beta}(f)(z)=F(z)=\left(\frac{\gamma}{z^{\gamma+m\beta}}\int_0^zt^{\gamma+m\beta-1}f^{\beta}(t)dt\right)^{1/\beta} \] is nonvanishing, when \(f\in \Sigma^*_{m,n}(\alpha)\) with \(n\geq -m+1\) and employ a differential subordination technique, for ...
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On certain meromorphic p-valent starlike functions

Journal of the Franklin Institute, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Some Characterizations for Meromorphic $${\zeta}$$-Starlike Functions

Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences)
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qiu, J.-L., Wang, Z.-G., Li, M.
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Some criteria for meromorphic multivalent starlike functions

Applied Mathematics and Computation, 2011
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Wang, Zhi-Gang, Liu, Zhi-Hong, Xiang, Ri-Guang   +2 more
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On Janowski starlike and convex meromorphic harmonic functions

Boletín de la Sociedad Matemática Mexicana, 2022
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On meromorphic quasi-starlike functions

1972
Artykuł w: Annales Universitatis Mariae Curie-Skłodowska. Sectio A, Mathematica. Vol. 22/23/24 (1968/1969/1970), s. 53-61 ; streszcz. pol., ros. ; Artykuł w: Annales Universitatis Mariae Curie-Skłodowska. Sectio A, Mathematica. Vol. 22/23/24 (1968/1969/1970), s. 53-61 ; streszcz. pol., ros.
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On meromorphic starlike and convex functions

1999
Let \(\Sigma\) denote the class of functions \(F\) of the form \(F(z)=\frac{1}{z}+\sum_{n=0}^{\infty}a_{n}z^{n}\), which is analytic and univalent in \(D=\{z ...
Nunokawa, M., Ahuja, O. P.
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Meromorphic starlike univalent functions with alternating coefficients

1994
Let \({\mathcal F}\) denote the family of all functions of the form \(f(z) = 1/z + \sum_{ m = 1}^\infty (-1)^{m - 1} a_m z^m\), \(a_m \geq 0\), which are regular in the punctured unit disc \(\Delta \backslash \{0\} = \{z : 0 < |z |< 1\}\) and satisfy the condition \(\text{Re} (D^{n + 1} f(z)/D^n f(z)) < 2 - \alpha\) for some \(n = 0,1, \dots\) and \(0 \
Aouf, M. K., Darwish, H. E.
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