Isospectral potentials on a discrete lattice. III

Kappeler, Thomas

doi:10.1090/S0002-9947-1989-0961624-6

Isospectral potentials on a discrete lattice. III

Author: Thomas Kappeler
Journal: Trans. Amer. Math. Soc. 314 (1989), 815-824
MSC: Primary 39A12; Secondary 35P05, 35Q20, 47B39, 58G25, 81C05
DOI: https://doi.org/10.1090/S0002-9947-1989-0961624-6
MathSciNet review: 961624
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Abstract: Continuing prior work of the author, spectral problems for a discretized version of the Schrödinger equation 'Laplacian plus potential' on the torus are considered. Spectral invariants are constructed and with their help isospectral sets of certain nongeneric potentials are determined.

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