On an estimate of some functional in the class of odd bounded univalent functions
Zyskowska, Krystyna (2015-12-08T12:39:07Z)
Acta Universitatis Lodziensis. Folia Mathematica
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Zyskowska, Krystyna (2015-12-08T12:39:07Z)
Acta Universitatis Lodziensis. Folia Mathematica
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Larisa Gromova, Alexander Vasil'ev (1996)
Annales Polonici Mathematici
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The functional |c₄ + pc₂c₃ + qc³₂| is considered in the class of all univalent holomorphic functions in the unit disk. For real values p and q in some regions of the (p,q)-plane the estimates of this functional are obtained by the area method for univalent functions. Some new regions are found where the Koebe function is extremal.
Tăut, Adela Olimpia, Oros, Georgia Irina, Şendruţiu, Roxana (2008)
Banach Journal of Mathematical Analysis [electronic only]
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Annales Academiae Scientiarum Fennicae. Mathematica
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Colloquium Mathematicae
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Colloquium Mathematicae
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Annales Polonici Mathematici
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Józef Baranowicz (1976)
Annales Polonici Mathematici
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M. Obradović (1985)
Matematički Vesnik
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Pałka, Janina (2015-11-10T12:14:29Z)
Acta Universitatis Lodziensis. Folia Mathematica
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K. S. Padmanabhan, R. Bharati (1983)
Annales Polonici Mathematici
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Sumit Nagpal, V. Ravichandran (2012)
Annales Polonici Mathematici
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By using the theory of first-order differential subordination for functions with fixed initial coefficient, several well-known results for subclasses of univalent functions are improved by restricting the functions to have fixed second coefficient. The influence of the second coefficient of univalent functions becomes evident in the results obtained.
Lachance, M. (1980)
International Journal of Mathematics and Mathematical Sciences
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Samaris, N. (1996)
International Journal of Mathematics and Mathematical Sciences
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Annales Polonici Mathematici
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International Journal of Mathematics and Mathematical Sciences
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Novi Sad Journal of Mathematics
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