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数学与统计学院"21世纪学科前沿"系列学术报告预告

Lower Bounds for the First Eigenvalue of the Vibrating Clamped Plate under Compression

编辑: 数学学院 董学敏 时间:2015-08-14
 报告人: Professor Mark S. Ashbaugh ,  University of Missouri – ColumbiaUSA

报告题目: Lower Bounds for the First Eigenvalue of the Vibrating Clamped Plate under Compression
报告时
间: 2015年 819日(周三)上午 1000-1100
报告地点: 中关村校区中心教学楼843(或844)教室


Abstract:   
We give a sharp lower bound to the fundamental frequency of a clamped vibrating plate under compress in  
the context of plates of different shapes of fixed area.  Mathematically, the problem is that of bounding the first eigenvalue of a certain 4th-order partial differential operator with leading term the bi-Laplacian from below by a positive constant over the square of the domain's area.  We give a Rayleigh-Faber-Krahn-type result for this problem.  (This is joint work with R. Benguria and R. Mahadevan.)  

报告人简介: Professor Mark S. Ashbaugh 在Laplace的特征值及等周不等式方面做出了杰出的工作, 曾解决了著名的PPW猜想、二维及三维的Rayleigh猜想等。在《Annals of Mathematics》、《Bulletin of American mathematical Society》、《Duke Math. J.》、《Advances in Mathematics》、《Comm. Math. Phys.》等国际一流杂志上发表数十篇论文。