In this talk, we will discuss some Siu-Sampson type results for pseudo-harmonic maps between pseudo-Hermitian manifolds. Under some kind of nonpositive curvature assumptions for the target manifolds, we derive pseudo- pluriharmonicity of the pseudo- harmonic maps. By further rank conditions, some pseudo- holomorphicity results of these pseudoharmonic maps are established.

学 术 报 告报 告 人： 沈 忠 民 教授（Indiana University-Purdue University Indianapolis）报告题目：On Einstein Metrics in Finsler Geometry报告时间：2013年11月20日（周三）下午2:30-3:30报告地点：致远楼105室欢迎广大师生参加！2013-11-1

题目：Dimensions of Siegel modular forms and related theories报告人：伊吹山 知義T. Ibukiyama教授大阪大学Osaka University时间： 2012年11月15日上午10：00—11：00地点：数学系致远楼10

This paper has used the Arbitrage Theorem (Gordan Theorem) to clarify some misconceptions in the literature of derivative pricing. First, unlike the claim of the irrelevancy of the underlying asset‘s (stock’s) expected return, it is found that the value of an option depends on the probability of the underlying asset (stock) rising or falling. Using the relationship between the relative price ratio between the two states:π/(1-π) and the probability of the up move, the paper also derives discrete-time versions of the Greeks. Second, since with no arbitrage, μ is a function of rf and σ, the Black-Scholes option pricing formula contains the underlying asset’s expected rate of return μ. Third, with a two-step contract, it has been shown that within a company, there is no first claim or seniority between bond and stock, but there is first claim among fixed-income assets (e.g., labor and bond), and labor is senior to bond.

必赢76net线路数学系学术报告题 目：细胞的分子水平多态性的机制分析报告人：钱敏平 教授(北京大学必赢国际bwin登录 资深教 授）时间：2013年10月31日（周四）上午10:30开始地点：数学系致远楼102室欢迎广大师生前来参加联系我们电话：86-21-65981384地址：上海市四平路1239号 致远楼快速通

美籍专家沈忠民教授Finsler几何系列讲座Spray GeometryLectures given at Tongji University (Nov 6-Dec 9, 2013)By Zhongmin ShenIndiana University-Purdue University Indianapolis地点必赢76net线路四平路校区数学系时间11月6日—12月9日周一下午 14:00—16:40    致远楼108周三下午 14:00—16:40    致远楼105内容提要Sprays are systems of second order differential equations with homogeneous coefficients. Every Finsler...

学术报告报告人:李继彬教授(浙江师范大学)题目： Bifurcations and Exact Travelling Wave Solutions of the Generalized Two-Component Camassa-Holm Equation    时间：2013年10月22日(星期二)下午3：00—4：00地点：致远楼102欢迎各位参加

学术报告报告人:韩茂安教授(上海师范大学)题目：The stability of some kinds of generalized homoclinic loops in planar piecewise smooth systems时间：2013年10月22日(星期二)下午4：00—5：00地点：致远楼102欢迎各位参加