ON UPPER BOUNDS OF H2,1(f) AND H2,2(f) HANKEL DETERMINANTS FOR A SUBCLASS OF ANALYTIC FUNCTIONS
DOI:
https://doi.org/10.5281/92meyb89Abstract
In this paper, we give upper bounds of the Hankel determinants
H2,1(f) and H2,2(f) for the classes S
∗
(λ,n)
, where f is analytic in the open unit
disk ∆ = {z ∈ C : |z| < 1} and normalized so that f(z) = z +a2z
2 +a3z
3 +. . .
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