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arXiv · 2506.16212

The Third Hankel determinant for inverse coefficients of bounded turning functions

Mohsan Raza·Nikola Tuneski
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Abstract

In this paper, we obtain sharp bounds for the third Hankel determinants of the coefficients of the inverse of bounded turning functions. Thus answering a negatively to a conjecture recently posed regarding these functions. Additionally, we offer a positive response for the Hankel determinant related to a class of bounded turning functions.

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Mohsan Raza, Nikola Tuneski. 2025-06-19. The Third Hankel determinant for inverse coefficients of bounded turning functions. https://arxiv.org/abs/2506.16212

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