On the generalized Zalcman functional for some classes of univalent functions
Efraimidis, Iason · Vukotić, Dragan
Original · EN
We prove three sharp estimates for the generalized Zalcman coefficient functional: one for the Hurwitz class, another for the Noshiro-Warschawski class, and yet another for the functions in the closed convex hull of convex univalent functions. In each case the extremal functions are identified. We also observe that an asymptotic version of the Zalcman conjecture is true.
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