Three Extremal Problems for Hyperbolically Convex Functions
Three Extremal Problems for Hyperbolically Convex Functions
复制标题
双曲凸函数的三个极值问题
DOI:
10.1007/bf03321058
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发表时间:
2004
影响因子:
2.1
通讯作者:
G. Williams
中科院分区:
文献类型:
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作者:
R. Barnard;K. Pearce;G. Williams
In this paper we apply a variational method to three extremal problems for hyperbolically convex functions posed by Ma and Minda and Pommerenke [6, 14]. We first consider the problem of extremizing Ref(z)/z. We determine the minimal value and give a new proof of the maximal value previously determined by Ma and Minda. We also describe the geometry of the hyperbolically convex functionswhich maximize Rea3.
DOI:
--
发表时间:
--
期刊:
J.Math.Anal.Appl. (to appear)
影响因子:
--
作者:
S.-A Kim;T.Sugawa
通讯作者:
T.Sugawa