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We discuss the problem of existence of plurisubharmonic defining functions for pseudoconvex domains in complex manifolds. For a given domain we also analyze the structure of the set where all such functions fail to be strictly plurisubharmonic.

报告人：楼元教授(Ohio State University, USA）题目： Nash equilibrium for evolution of dispersal时间：2013年6月21日(星期五)下午4：00—5：00地点：数学系致远楼10

报告人：王明新教授(哈工大)题目：捕食和竞争模型的自由边界问题时间：2013年6月20日(星期四)下午4：00—5：00地点：数学系致远楼10

报告人:张同华博士(Swinburne University of Technology)题目： Dynamics of delay coupled Van der Pol-Duffing oscillators时间：2013年6月18日(星期二)上午10：00—11：00地点：数学系宁静楼10

报 告 人：马翔教授(北京大学)报告题目： Codimension two submanifolds attaining equality in the DDVV inequality报告时间：2013年6月18日（周二）16:00-17:00报告地点：致远楼105室The DDVV conjecture is a universal inequality for submanifolds in real space forms, which has been proved by Zizhou Tang and Jianquan Ge (also by Zhiqin Lu). The structure of the second fundamental form was explicitly found o...

I will introduce some of the differential equations which arise in quantum cohomology: the quantum differential equations, the WDVV equations, and the tt*-equations. These differential equations are motivated by the theory of Gromov-Witten invariants, but they have relations with various topics in differential, algebraic, and symplectic geometry. They are also "integrable systems", in the sense that they have many algebraic symmetries. In some cases at least, these symmetries can be used to solve the equations.

报告人:郁培教授 (University of Western Ontario)题目： Equivalence of MTS Method and CMR Method for Delay Differential Equations时间：2013年6月6日(星期四)下午3：30—4：30地点：南一教51

报告人:张文婧博士 (University of Western Ontario)题目：A study of recurrent infection in deterministic in-host models时间：2013年6月6日(星期四)下午4：30—5：30地点：南一教51