报告人：孙龙发
报告时间：5月27日 15:00-17:00
报告地点：X30406
报告内容：In this talk, we will introduce some recent results of metric preserving maps on Banach spaces. We first present some results about Hyers-Ulam stability of perturbed isometries and perturbed norm-additive maps defined on the positive cones of ordered Banach spaces or the whole space. Secondly, we introduce some new development about the extension problem of isometries or norm-additive maps between the positive unit spheres.
报告人简介：孙龙发，华北电力大学数理系副教授。主要从事Banach空间理论及等距理论的研究。在Bull. London Math. Soc., J. Math. Anal. Appl.、Acta Math. Sin.(Engl. Ser.)等期刊发表论文多篇。主持国家自然科学基金、河北省自然科学基金各一项。
