Coefficient Bounds for a General Subclass of Bi-Univalent Functions
AbstractIn the present investigation, we introduce and investigate a new subclass of the function class ∑ of bi-univalent functions defined in the open unit disc. We find estimates on the coefficients |a2| and |a3| for functions in the function class S∑(n, h,λ ). The results presented in this paper improve or generalize the recent works of Jothibasu  and other authors.
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