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The intermediate problems and the maximum-minimum theory of eigenvalues
A. Weinstein
Citation:
A. Weinstein, “The intermediate problems and the maximum-minimum theory of eigenvalues”, Matematika, 8:5 (1964), 91–101; J. Math. Mech., 12 (1963), 235–245
Linking options:
https://www.mathnet.ru/eng/mat332 https://www.mathnet.ru/eng/mat/v8/i5/p91
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