摘要
Let G be univalent in the unit disc Δ. Let . C2×Δ→C be analytic in a domain DCC and let p(z) be analytic in Δ with (p(z), zp'(z);z)∈D when z∈Δ . Assume that p(z) satisfies the differential subordination(p(z), zp'(z). z) G(z), z∈A ,(where denotes subordination). We determine some conditions on and G so that Rep(z)>ρ in Δ and give some applications of these resullts .
记△={|z|<1}.设函数(?):C^2×△→C在区域D(?)C中解析,G是△中的单叶解析函数.若△中的解析函数p(z)满足微分从属关系(?)(p(z),zp’(z);z)(?)G(z),z∈△,则可确定(?)和G的某些条件使之Re p(z)>p(z∈△),并且给出这些结果的某些应用.
