Coefficient problem for certain subclasses of bi-univalent functions defined by convolution
نویسندگان
چکیده
منابع مشابه
A certain convolution approach for subclasses of univalent harmonic functions
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A function is said to be bi-univalent on the open unit disk D if both the function and its inverse are univalent in D. Not much is known about the behavior of the classes of bi-univalent functions let alone about their coefficients. In this paper we use the Faber polynomial expansions to find coefficient estimates for four well-known classes of bi-univalent functions which are defined by subord...
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We introduce and investigate two new subclasses ℳ σ (α, λ) and ℳ σ (β, λ) of meromorphic bi-univalent functions defined on Δ = {z : z ∈ ℂ, 1 < |z | <∞}. For functions belonging to these classes, estimates on the initial coefficients are obtained.
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ژورنال
عنوان ژورنال: Mathematica Moravica
سال: 2016
ISSN: 1450-5932,2560-5542
DOI: 10.5937/matmor1602015a