学术报告
Two kinds of best constants in the Wirtinger inequality -许贵桥 教授（天津师范大学）/ Exponentially Convergence of Approximation Problem of Infinitely Differentiable Multivariate Functions -刘永平 教授（北京师范大学）
题 目：Two kinds of best constants in the Wirtinger inequality
报告人：许贵桥 教授（天津师范大学）
摘 要：We introduced the computation of two kinds of the best constants in the Wirtinger inequalities.
题 目：Exponentially Convergence of Approximation Problem of Infinitely Differentiable Multivariate Functions
报告人：刘永平 教授（北京师范大学）
摘 要：In this talk, what we study is approximation problems of infinitely differentiable multivariate functions in the worst case setting. As the approximation tools by using a series of information based algorithms in which each algorithm is constructed by finitely many standard information operations, we proved that the $L_/infty$-approximation problem is exponential convergent. As a corollary we obtained that the corresponding integral problem is also exponentially convergent.
时间：11月21日（周二）下午2：40-4：40
地点：首师大校本部新教二楼808
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