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Methods of perturbation theory in the qualitative essential spectral analysis of differential operators

open access: yesMathematical Modelling and Analysis, 1998
The qualitative properties of perturbed differential equations are investigated. The analogies of the classical Weyl theorem are proved.
V. A. Erovenko
doaj   +1 more source

Any Topological Recursion on a Rational Spectral Curve is KP Integrable. [PDF]

open access: yesCommun Math Phys
Alexandrov A   +4 more
europepmc   +1 more source

Fast automated adjoints for spectral PDE solvers. [PDF]

open access: yesProc Natl Acad Sci U S A
Skene CS, Burns KJ.
europepmc   +1 more source

Intertwining Operators Beyond the Stark Effect. [PDF]

open access: yesCommun Math Phys
Fanelli L   +4 more
europepmc   +1 more source

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