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math.CA2022
The eigenvalues and eigenfunctions of the non-linear equation associated to second order Sobolev embeddings
Lyonell Boulton, Jan Lang
We consider the non-linear eigenvalue equations characterizing into Sobolev embeddings of second order for Navier boundary conditions at both ends of a line segment. We…
math.FA2022
Norm-ideal perturbations of one-parameter semigroups and applications
Lyonell Boulton, Spyridon Dimoudis
The notion of equivalence classes of generators of one-parameter semigroups based on the convergence of the Dyson expansion can be traced back to the seminal work of Hille and Phil…