题目： Dynamic Default Predictions - Spot and Forward Intensity Approaches报告人： Professor Jin-Chuan Duan（段锦泉）新加坡国立大学风险管理研究所，所长新加坡国立大学商学院，和发金融讲座教授台湾中央研究院，院士时间： 10月31日(周三)上午 10：00-11：00地点：致远楼107

题目：Incompressible Fluid Flows With Slip boundary conditions报告人：郭本瑜 教授上海师范大学数学系时间：2012年10月25日（星期四）下午3：30地点：数学系致远楼10

The classic Forelli theorem says that if a complex-valued function defined on the unit ball is smooth at the origin and holomorphic along the radial complex lines, then it is holomorphic on the ball. This theorem proved in 1978 has been generalized only in 2006 by Chirka in complex dimension 2. I will discuss the further studies by Kim-Poletsky-Schmalz (JGA2008) and by Joo-Kim-Schmalz (Math Ann 2012).

We study strong stability of Nash equilibria in the load balancing game of m (m ≥2) identical servers, in which every job chooses one of the m servers and each jobwishes to minimize its cost, given by the workload of the server it chooses. A Nash equilibrium (NE) is a strategy profile that is resilient to unilateral deviations. Finding an NE in such a game is simple. However, NE-configurations are not stable against coordinated deviations of several jobs, while a strong Nash equilibrium (SE) is. We study how well an NE approximates an SE. Given any job assignment in the load balancing game, the improvement ratio (IR)of a deviation of a job is defined as the ratio between the pre- and post-deviationcosts. An NE is said to be ρ-approximate SE (ρ≥ 1) if there is no coalition of jobs such that each job of the coalition will have an IR more than ρ from coordinated deviations of the coalition

我们希望考虑箭图的拓扑结构对于由箭图决定的代数结构有什么样的影响。我们分两个方面来阐明这个问题：遗传代数上倾斜(tilting)模的倾斜箭图的亏格；有限变异(mutation)型下的丛(cluster)代数的箭图的亏格

报告人： Dr. Gechun LIANG （Oxford-Man Institute, University of Oxford）题目：A Continuous Time Structural Model for Insolvency, Recovery and Rollover Risks时间：2012年6月28日（星期四）下午2：00—3：00地点：数学系致远楼10

报告人：邓铿教授(University of Louisiana at Lafayette, USA）题目： On a nonautonomous juvenile-adult model时间：2012年6月28日(星期四)下午3：30—4：30地点：数学系致远楼10

报告人：Prof. Xingfu Zou(University of Western Ontario, Canada）题目： Avian Influenza Dynamics in Wild Birds with Bird Mobility and Spatial Heterogeneous Environment时间：2012年6月28日(星期四)下午4：30—5：30地点：数学系致远楼10