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JOURNALS // Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica // Archive

Bul. Acad. Ştiinţe Repub. Mold. Mat., 2003 Number 3, Pages 53–57 (Mi basm206)

Research articles

On a nonlinear differential subordination I

Georgia Irina Oros

Faculty of Mathematics and Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania

Abstract: We find conditions on the complex-valued functions $A,B,C,D$ in the unit disc $U$ such that the differential inequality
$$ |A(z)z^2 p''(z)+B(z)p^2(z)+C(z)p(z)+D(z)|<M $$
implies $|p(z)|<N$, where $p$ is analytic in $U$, with $p(0)=0$.

Keywords and phrases: Differential subordination, dominant.

MSC: 30C80

Received: 10.04.2003

Language: English



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