应数学系付永强教授的邀请，罗马尼亚Radulescu教授和波兰Majdak教授将于2018年12月6日来我校进行学术交流，并举办泛函分析和偏微分方程方面的讲座，欢迎我校相关专业的老师和同学参加。

报告人：Vicentiu D. Radulescu

单位：AGH University of Science and Technology, Krakow, Poland

             &Institute of Mathematics of the Romanian Academy, Bucharest, Romania

报告题目：Anisotropic double phase problems and perspectives

时间：2018年12月6日（周四）下午15:00-16:00

地点：格物楼503报告厅

报告摘要：This talk is inspired by several open problems raised by G. Mingione in 2016 in relationship with the role of double-phase energies with variable exponent. We describe several existence results and we raise some open problems in the framework of the "almost critical" setting.

报告人：Witold Majdak

单位：AGH University of Science and Technology, Krakow, Poland

报告题目：Subnormality and the lifting commutant problem

时间：2018年12月6日（周四）下午16:00-17:00

地点：格物楼503报告厅

报告摘要：The aim of this talk is present some research problems considered in the theory of Hilbert space operators. We focus on subnormal operators, i.e. operators which have normal extensions possibly in larger Hilbert spaces. We recall some classical results as well as quite recent achievements concerning characterizations of operators which lift to the commutant of a minimal normal extension of a subnormal operator. In particular, it will be discussed the so-called local lifting theorem saying that an intertwining operator between subnormal operators lifts to an intertwining operator between their minimal normal extensions if and only if the restriction of the intertwining operator to each cyclic invariant subspace lifts, and the supremum of the norms of the cyclic lifts is finite.

专家简介：

cvitae_Radulescu.pdf  

  WitoldMajdak-CV.pdf