吳平
摘 要: 對式(1)的譜進行了研究,得到了譜的上界不等式。文中采用的分部積分、Rayleigh定理和不等式估計等數(shù)學方法。
關鍵詞: 一類系統(tǒng); 離散譜; 上界估計
中圖分類號: O 175.9 文獻標志碼: A 文章編號: 1671-2153(2018)03-0096-04
Abstract: This paper considers estimates for discrete spectrum of a system .The inequality of the upper bound of the (n+1)th eigenvalue is estimated from the first n eigenvalues by using integral, Reyleigh theorem and inequality estimation. The estimate coefficients do not depend on the measure of the domain in which the problem is concerned.
Keywords: a system; discrete spectrum; upper bound; estimate
(責任編輯:徐興華)