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預告:Toshiyuki Sugawa:Estimates of hyperbolic distance in the punctured sphere

2018年10月23日 15:49 來源:科學研究部

報告承辦單位:數(shù)學與統(tǒng)計學院

報告內(nèi)容: Estimates of hyperbolic distance in the punctured sphere

報告人姓名: Toshiyuki Sugawa

報告人所在單位:Tohoku University

報告人職稱/職務及學術頭銜:教授/博導

報告時間:2018-10-25,14:30—15:30

報告地點:云塘校區(qū)理科樓A419

報告人簡介: Toshiyuki Sugawa,日本東北大學(Tohoku University)教授,博導;研究方向:Teichmüller理論、擬共形映射、單葉函數(shù);美國數(shù)學會會員,日本數(shù)學會會員;國際有限維和無限維復分析會議常務副主席;《The Journal of Analysis》、《Bulletin of the Korean Mathematical Society 、《Banach Journal of Mathematical Analysis》等雜志編委。

報告摘要:It is well recognized that the values of a holomorphic function on the unit diskis controlled by the hyperbolic distance of the domain containing its image.It is, however, not easy in general to estimate the hyperbolic distance of a plane domain.In this talk, we will propose a method to construct a computable quantity which is comparable with the hyperbolic distance of a punctured sphere.This talk is based on joint work with Tanran Zhang (Soochow University) and, partly,Matti Vuorinen (University of Turku).

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