Far from equilibrium steady states of 1D-Schrödinger–Poisson systems with quantum wells I
Finite difference methods for computing eigenvalues of fourth order boundary value problems.
Finite eigenfunction approximations for continuous spectrum operators.
Five integral inequalities; an inheritance from Hardy and Littlewood.
Floquet operators with singular spectrum. I
Floquet operators with singular spectrum. II
Floquet operators with singular spectrum. III
Formally normal ordinary differential operators
Friedrichs extension of operators defined by linear Hamiltonian systems on unbounded interval
In this paper we consider a linear operator on an unbounded interval associated with a matrix linear Hamiltonian system. We characterize its Friedrichs extension in terms of the recessive system of solutions at infinity. This generalizes a similar result obtained by Marletta and Zettl for linear operators defined by even order Sturm-Liouville differential equations.
From holonomy of the Ising model form factors to -fold integrals and the theory of elliptic curves.
Fučík spectra for vector equations.