Coefficient majorization conjecture for the class cmathcalB1(α)cmathcal{B}_1(\alpha)

Let SS denote the class of normalized univalent functions. For 0α10\leq\alpha\leq1, suppose that gSg\in S has the expansion g(z)=z+b2z2+g(z)=z+b_2z^2+\cdots and satisfies

g(z)[g(z)z]α1=1+2n=1zn.g'(z)\left[\frac{g(z)}{z}\right]^{\alpha-1}=1+2\sum_{n=1}^{\infty}z^n.

Let fB1(α)f\in\mathcal{B}_1(\alpha) have the normalized expansion referred to as (A-05). Coefficient majorization conjecture. For every n2n\geq2,

anbn.|a_n|\leq b_n.

The paper presents this as an obvious conjecture in the coefficient problem for B1(α)\mathcal{B}_1(\alpha), extending known sharp estimates for low-order coefficients and the known a5a_5 bound in a restricted parameter range. Its resolution is not given in the supplied text.

Sources & referencesView supporting material

Primary source

Lokenath Thakur, “A note on a subclass of bazilevič functions”, arXiv:2604.15974 (2026).

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