The First International School "Functional Analysis, Differential Equations and Their Application" Puebla (Mexico), May 18--23, 1995

Wigner–von Neumann quasi-isospectral manifolds

J. Cruz, R. Martinez, R. Navarro

Benemérita Universidad Autónoma de Puebla

Abstract: Schrödinger operator in Wigner and von Neumann form is under consideration. The theorem about positive eigenvalues of this operator is formulated.

UDC: 517.98

Received: 01.04.1996

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