Variational Methods for Eigenvalue Problems —— An Introduction to the Weinstein Method of Intermediate Problems (Second Edition)

----- 特征值问题的变分方法：中间问题的温斯坦方法介绍（第二版）

ISBN: 9781487596002 出版年：2019 页码：291 Gould, S H University of Toronto Press

The first edition of this book gave a systematic exposition of the Weinstein method of calculating lower bounds of eigenvalues by means of intermediate problems. This second edition presents new developments in the framework of the material contained in the first edition, which is retained in somewhat modified form.