6月6日(木)  15:00 -- 16:00  程 晋 教授(復旦大学数学系、中国)
               ``Numerical Differentiation and its Application''


            16:15 -- 17:15  李 大潜 教授(復旦大学数学系、中国)
               ``Some results on the exact boundary controllability
                 for quasi-linear hyperbolic systems''


＜研究発表要旨＞
（１）``Numerical Differentiation and its Application''
We present some results about the numerical differentiation 
in one and two dimensional cases. Some applications are given.

（２）``Some results on the exact boundary controllability for 
        quasi-linear hyperbolic systems''
By means of the existence and uniqueness of semi-global C^{1} 
solution to the mixed initial-boundary value problem for quasi-linear 
hyperbolic systems, we present some recent results on the local 
exact boundary controllability for general one-dimensional first order 
quasi-linear hyperbolic systems with nonlinear boundary conditions.