Deficiency indices and discreteness property of block Jacobi matrices and Dirac operators with point interactions×p-matrix entries. We present new conditions for general block Jacobi matrices to be self-adjoint and have
discrete Eta-Invariants for Parameter-Dependent Operators Associated with an Action of a Discrete Group operators associated with an isometric action of a
discrete group of polynomial growth on a smooth closed
1-D Schrödinger operators with local point interactions on a discrete set1-D Schrödinger
operators with local point interactions on a
discrete set
On digital approximations for elliptic boundary value problems-differential
operator in
discrete Sobolev-Slobodetskii spaces. Existence and uniqueness theorems are proved and a
DYNAMIC MODELS WITH DISCRETE TIME RELATED TO OPERATORS OF BIRKHOFF'S TYPEBirkhoff's equations with
discrete time are obtained. The relationship between the first integrals
Asymptotics of parabolic Green's functions on lattices. The spatially
discrete (difference)
operators under consideration are finite-difference approximations