The Fekete-Szegö problem for starlike mappings and nonlinear resolvents of the Carathéodory family on the unit balls of complex Banach spaces
ANALYSIS AND MATHEMATICAL PHYSICS(2021)
摘要
In this paper, we first give a coefficient inequality for holomorphic functions on the unit disc 𝕌 in ℂ which are subordinate to a holomorphic function p on 𝕌 with p'(0) 0 . Next, as applications of this theorem, we will give the Fekete-Szegö inequality for subclasses of normalized starlike mappings and normalized quasi-convex mappings of type B on the unit ball 𝔹 of a complex Banach space. We also give the Fekete-Szegö inequality for (1+r)J_r , where J_r=J_r[f] is the nonlinear resolvent of a mapping f in the Carathéodory family ℳ(𝔹) . Various particular cases will be also considered.
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关键词
Carathéodory family,Fekete-Szegö problem,Nonlinear resolvent,Quasi-convex mapping,Starlike mapping,Subordination
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