Results 81 to 90 of about 4,785 (188)

On Eigenfunction Expansions [PDF]

Proceedings of the National Academy of Sciences, 1953
openaire   +4 more sources

On the point spectrum of quasi-periodic Schrödinger operators

Comptes Rendus. Mathématique
In this paper we study the spectral properties of a family of discrete one-dimensional quasi-periodic Schrödinger operators with discontinuous potential.
Refai, Walid
doaj   +1 more source

Spectral Properties of the Laplace Operator with Variable Dependent Boundary Conditions in a Disk

Axioms
In this work, we study the spectral properties of the Laplace operator with variable dependent boundary conditions in a disk. The boundary conditions include periodic and antiperiodic boundary conditions as well as the generalized Samarskii–Ionkin-type ...
Aishabibi Dukenbayeva, Makhmud Sadybekov
doaj   +1 more source

PERTURBATION OF EIGENFUNCTION EXPANSIONS [PDF]

Proceedings of the National Academy of Sciences, 1967
openaire   +3 more sources

Exponential decay of two-body eigenfunctions: A review

Electronic Journal of Differential Equations, 2000
We review various results on the exponential decay of the eigenfunctions of two-body Schrödinger operators. The exponential, isotropic bound results of Slaggie and Wichmann for eigenfunctions of Schrödinger operators corresponding to eigenvalues below ...
Peter Hislop
doaj  

On the Open TS/ST Correspondence. [PDF]

Commun Math Phys
François M, Grassi A.
europepmc   +1 more source

Expansions in Eigenfunctionals

Indagationes Mathematicae (Proceedings), 1965
openaire   +2 more sources

The flea on the Magnetic Elephant. [PDF]

Lett Math Phys
Exner P, Morin L.
europepmc   +1 more source

Intertwining Operators Beyond the Stark Effect. [PDF]

Commun Math Phys
Fanelli L, Su X, Wang Y, Zhang J, Zheng J.   +4 more
europepmc   +1 more source

Area Law for the Entanglement Entropy of Free Fermions in Nonrandom Ergodic Field. [PDF]

Entropy (Basel)
Pastur L, Shamis M.
europepmc   +1 more source