报告题目: An intermediate eigenvalue problem in electronic structure calculation
报告人:张绍良 教授(名古屋大学)
报告时间:2026年9月11日(周五)9:00-10:00
报告地点:数学楼114报告厅(小报告厅)
校内联系人:杜磊 副教授 联系方式:84708351-8606
报告摘要:We consider the generalized eigenvalue problem A x = λB x where A is a real symmetric matrix and B is a real symmetric positive definite matrix.A property of this problem is that all the eigenvalues are real,and it is often needed to compute a number of eigenvalues which are important for applications.In the field of electronic structure calculation, there has emerged a need to find the eigenvaluesrelated to luminescence of organic materials. The targets are small in number,and from the atomic configuration of the material it is determined which eigenvalues need to be computed.In this talk, we present a bisection approach to obtaining the eigenvalues related to the luminescence.By iteratively searching and narrowing the interval within which the target eigenvalues exist,we can find them without computing unrelated eigenvalues.
报告人简介:张绍良,名古屋大学大学教授,名古屋大学中国交流中心主任。吉林大学本科(1983),筑波大学博士(1990)。曾先后在计算流体力学研究所(研究员),筑波大学(讲师),东京大学(副教授/教授)任职,2005年起任现职。主要从事大型科学与工程计算的高速算法研究工作。张绍良教授发展了Krylov子空间“乘积型迭代法”,在改良著名迭代法 Bi-CGSTAB的同时,借助Lanczos三阶递推公式,提出了解大型线性方程组的乘积迭代法的统一模型。由此统一模型,不仅可推导出著名的CGS法,Bi-CGSTAB法和Bi-CGSTAB2法,并且提出了一种新的方法:GPBi-CG法,该法是现有Krylov子空间法中精度最高,迭代速度最快,计算效率最有效的算法之一。张绍良教授曾/现任日本应用数理学会(JSIAM)理事,JSIAM副会长,JSIAM fellow, East Asia SIAM秘书长,担任 International Journal of Numerical Analysis and Modeling, East Asian Journal on Applied Mathematics, Communications in Mathematical Research, CSIAM Transaction on Applied Mathematics等国际期刊编委。