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Investigating coefficient estimates in bi-univalent functions using the Faber polynomial method, suggesting new findings.
The current investigation aims to explore the classical open problem concerning the Ma–Minda starlike family, employing the subordination principle to generate a novel family of bi-univalent analytic functions. Upon using the Faber polynomial technique, we derive the coefficient estimates and the optimal upper bound of Hankel determinant. Furthermore, we discuss earlier studies relevant to our results.
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El-Qadeem et al. (2026) studied this question.
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