期刊名称：Constantin Brancusi University's Annals, Letters and Social Sciences Serie
印刷版ISSN：1844-6051
出版年度：2007
期号：1
出版社：Academica Brancusi Publisher
摘要：Let S be the class of analytic functions of the form f(z) = z + a2 z 2 +…, f(0)= 0, f (0)=1 defined on the unit disk z 1. Petru T. Mocanu [2] raised the question of the determination max Re f(z) when Rez f (z)=0, z = r, r>0 given. For solving the problem we shall use the variational method of Schiffer-Goluzin [1]. Cuvinte cheie: funcţie olomorfă, metodă variaţională, funcţie extremală.
