Multiplicities of the Eigenvalues of the Discrete Schrödinger Equation in Any Dimension
نویسندگان
چکیده
The following von Neumann-Wigner type result is proved: The set of potentials a: T —► R (r Ç ZN), with the property that the corresponding discrete Schrödinger equation A¿ + a has multiple eigenvalues when considered with certain boundary conditions, is an algebraic set of codimension> 2 within Rr.
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تاریخ انتشار 2010