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math.SP2023
The pseudospectrum of an operator with Bessel-type singularities
Lyonell Boulton, Marco Marletta
In this paper we examine the asymptotic structure of the pseudospectrum of the singular Sturm-Liouville operator subject to periodic boundary…
math.SP2023
Completeness of trajectories associated to Appell hypergeometric functions
Lyonell Boulton
We examine the linear completeness of trajectories of eigenfunctions associated to non-linear eigenvalue problems, subject to Dirichlet boundary conditions on a segment. We pursue…