Namig J. Guliyev
Spectral identities for Schrodinger operators
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ABSTRACT.  We obtain a system of identities relating boundary coefficients and spectral data for the one-dimensional Schrodinger equation with boundary conditions containing rational Herglotz-Nevanlinna functions of the eigenvalue parameter. These identities can be thought of as a kind of mini version of the Gelfand-Levitan integral equation for boundary coefficients only.