Physics Universal Lower Bounds on Eigenvalue Splittings ... - Caltech
Physics Universal Lower Bounds on Eigenvalue Splittings ... - Caltech
Physics Universal Lower Bounds on Eigenvalue Splittings ... - Caltech
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460 W. Kirsch and B. Sim<strong>on</strong><br />
10. Magnus, W., Winkler, S.: Hill's equati<strong>on</strong>, New York: Interscience, 1966, Dover editi<strong>on</strong> available<br />
11. Sim<strong>on</strong>, B.: Semiclassical analysis of low lying eigenvalues, III. Width of the ground state band in<br />
str<strong>on</strong>gly coupled solids. Ann. Phys. (to appear)<br />
12. W<strong>on</strong>g, B., Yau, S. S. T., Yau, S. -T.: An estimate of the gap of the first two eigenvalues in the<br />
Schrόdinger operator. Preprint<br />
Communicated by T. Spencer<br />
Received June 11, 1984; in revised form August 10, 1984
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