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Research Article
Vol. 35, Issue 1
Polynomial Bounds for Bi-Univalent Functions Associated with Sigmoid Function and Q− Derivative Over a Chebyshev Polynomials
This paper introduces a new subclass of the function class P of biunivalent analytic functions defined in the open unit disk, associated with a certain operator and the Sigmoid function via Chebyshev polynomials. Bounds for the initial coefficients are obtained for the defined class, along with results for the Fekete–Szeg¨o functional. Furthermore,...
