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William Desmond Evans
Researcher at Cardiff University
Publications - 117
Citations - 4010
William Desmond Evans is an academic researcher from Cardiff University. The author has contributed to research in topics: Essential spectrum & Operator theory. The author has an hindex of 26, co-authored 117 publications receiving 3764 citations. Previous affiliations of William Desmond Evans include University of Sussex & University of London.
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Book Chapter
Non-negative Extensions of Hamiltonian Systems
TL;DR: In this article, the non-negative self-adjoint extensions of a Hamiltonian system using the Krein-Vishik-Birman theory were determined using the first-order ODE.
Journal ArticleDOI
Smilansky's model of irreversible quantum graphs, II: the point spectrum
TL;DR: In this paper, the authors apply the variational approach to the study of the point spectrum of a quantum graph and a system of K one-dimensional oscillators attached at different points of the graph.