F. Gesztesy

activity

19972013

most citedLocal Spectral Properties of Reflectionless Jacobi, CMV, and Schrödinger Operators

8 citations · 46 across the 28 of their papers we have counts for

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Showing 2013Show all

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math.SP2013

Some Remarks on the Spectral Problem Underlying the Camassa-Holm Hierarchy

Fritz Gesztesy, Rudi Weikard

We consider left-definite eigenvalue problems $A ψ = λ B ψ$ , with $A \geq ε I$ for some $ε > 0$ and $B$ self-adjoint, but $B$ not necessarily positive or negative…

math.SP2013

On Spectral Theory for Schrödinger Operators with Operator-Valued Potentials

Fritz Gesztesy, Rudi Weikard, Maxim Zinchenko

Given a complex, separable Hilbert space $\cH$, we consider differential expressions of the type $τ = - (d^{2} / d x^{2}) + V (x)$ , with $x \in (a, \infty)$ or $x \in R$ . Here $V$ denotes…