作 者: ;
机构地区: 西安交通大学理学院应用数学研究中心
出 处: 《数学学报(中文版)》 2004年第4期723-730,共8页
摘 要: 本文通过引入若干Lipschitz对偶概念,将非线性Lipschitz算子半群对偶映射到Lipschitz对偶空间中,使其转化为线性算子半群.该线性算子半群被证明是一个Co*-半群,因而是某个Co-半群的对偶半群.从而证明了,在等距意义下,一个非线性Lipschitz算子半群可以延拓为一个Co-半群.基于这些结论,本文给出了一系列全新的非线性Lipschitz算子半群的表示公式. This paper is concerned with the representation problem of nonlinear semi- group of Lipschitz operators. By developing a series of novel dual notions of Banach space and Lipschitz operator, it is shown that a nonlinear semigroup of Lipschitz op- erators can induce a C_0~*-semigroup in Lipschitz dual space. Hence, it is proved that a nonlinear semigroup of Lipschitz operators can be isometrically embedded into a certain C_0-semigroup. On the basis of these results, a series of novel representation formulas for this type of nonlinear semigroup are therefore established.