報(bào)告人：孫龍發(fā)
報(bào)告時間：5月27日 15:00-17:00
報(bào)告地點(diǎn)：X30406
報(bào)告內(nèi)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.
報(bào)告人簡介：孫龍發(fā)，華北電力大學(xué)數(shù)理系副教授。主要從事Banach空間理論及等距理論的研究。在Bull. London Math. Soc., J. Math. Anal. Appl.、Acta Math. Sin.(Engl. Ser.)等期刊發(fā)表論文多篇。主持國家自然科學(xué)基金、河北省自然科學(xué)基金各一項(xiàng)。
