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A modification to the Rayleigh-Ritz method for obtaining lower bounds to eigenvalues

✍ Scribed by G.Venkateswara Rao; A.V.Krishna Murty

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 88 KB
Volume: 14
Category: Article
ISSN: 0020-7403
DOI: 10.1016/0020-7403(72)90068-9

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## History of the problem While it is relatively easy to get estimations of upper bounds for eigerivalues of elliptic differential operators with the well-known methods of J. W. S. RAYLEIGH and W. RITZ, the estimation of lower bounds is much more complicated. Estimations of lower bounds for eigenv