Subclasses of close-to-convex functions.
Silvia, E.M. (1983)
International Journal of Mathematics and Mathematical Sciences
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Silvia, E.M. (1983)
International Journal of Mathematics and Mathematical Sciences
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Shanmugam, T.N. (1989)
International Journal of Mathematics and Mathematical Sciences
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Noor, Khalida Inayat (1992)
International Journal of Mathematics and Mathematical Sciences
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Polatoglu, Yaşar, Bolcal, Metinşen Arzu (2004)
International Journal of Mathematics and Mathematical Sciences
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Owa, Shigeyoshi, Liquan, Liu, Ma, Wancang (1988)
International Journal of Mathematics and Mathematical Sciences
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Al-Amiri, H.S. (1985)
International Journal of Mathematics and Mathematical Sciences
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Fukui, Seichi (1997)
International Journal of Mathematics and Mathematical Sciences
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S. Ponnusamy, P. Vasundhra (2005)
Annales Polonici Mathematici
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Let 𝓐 denote the class of all normalized analytic functions f (f(0) = 0 = f'(0)-1) in the open unit disc Δ. For 0 < λ ≤ 1, define 𝓤(λ) = {f ∈ 𝓐 : |(z/f(z))²f'(z) - 1| < λ, z ∈ Δ} and 𝓟(2λ) = f ∈ 𝓐 : |(z/f(z))''| < 2λ, z ∈ Δ.cr Recently, the problem of finding the starlikeness of these classes has been considered by Obradović and Ponnusamy, and later by Obradović et al. In this paper, the authors consider the problem of finding...
M. Obradović (1983)
Matematički Vesnik
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Subramanian, K.G., Sudharsan, T.V., Silverman, Herb (2003)
International Journal of Mathematics and Mathematical Sciences
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Nasr, M.A. (1986)
International Journal of Mathematics and Mathematical Sciences
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Noor, Khalida I., Aloboudi, Fatima M., Aldihan, Naeela (1983)
International Journal of Mathematics and Mathematical Sciences
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Ram Singh, Sunder Singh (1982)
Colloquium Mathematicae
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