1 citations · 1 across the 3 of their papers we have counts for
3 papers
math.SP2017
Radial positive definite functions and spectral theory of the Schrödinger operators with point interactions
N. Goloshchapova, M. Malamud, V. Zastavnyi
We complete the classical Schoenberg representation theorem for radial positive definite functions. We apply this result to study spectral properties of self-adjoint realizations o…
math.SP2017
On the extremal extensions of a non-negative Jacobi operator
Aleksandra Ananieva, Nataly Goloshchapova
We consider minimal non-negative Jacobi operator with matrix entries. Using the technique of boundary triplets and the corresponding Weyl functions, we describe the Fri…
math.SP2017★ 1 cited
On the Multi-Dimensional Schrödinger Operators with Point Interactions
Nataly Goloshchapova
We study two- and three-dimensional matrix Schrödinger operators with point interactions. Using the technique of boundary triplets and the corresponding Weyl funct…