文章基本信息
- 标题：Hypocycloid of n + 1 cusps harmonic function
- 本地全文：下载
- 作者：Toshio Hayami ; Shigeyoshi Owa
- 期刊名称：Global Health Governance
- 电子版ISSN：1939-2389
- 出版年度：2011
- 卷号：3
- 期号：3
- 语种：English
- 出版社：Seton Hall University
- 摘要：For a harmonic function h(z) = f(z) + g(z) in the open unit disk U with holomorphic functions f(z) and g(z) satisfying g ′ (z) = z n−1 f ′ (z) (n = 2,3,4,···), a sufficient condition on f(z) for h(z) to be univalent in U and the image of U by h(z) to be a hypocycloid of n + 1 cusps are discussed.
