We systematically develop Weyl-Titchmarsh theory for singular differential operators on
arbitrary intervals $(a, b)\subseteq\mathbb {R} $ associated with rather general differential …

We review recent developments in the theory of 1-D Schrödinger operators with local point
interactions on a discrete set. The progress in this area was stimulated by recent advances …

In this paper, the linear differential expression of order n≥ 2 n ≥ 2 with distribution
coefficients of various singularity orders is considered. We obtain the associated matrix for …

This paper is concerned with inverse spectral problems for higher-order (n> 2) ordinary
differential operators. We develop an approach to the reconstruction from the spectral data …

In this paper, we propose an approach to inverse spectral problems for the n-th order (n≥ 2)
ordinary differential operators with distribution coefficients. The inverse problems which …

In this paper, we consider a class of matrix functions that contains regularization matrices of
Mirzoev and Shkalikov for differential operators with distribution coefficients of order n≥ 2 …

In this paper, we, for the first time, prove the local solvability and stability of an inverse
spectral problem for higher-order (n> 3) differential operators with distribution coefficients …

The paper deals with a new type of inverse spectral problems for second‐order quadratic
differential pencils when one of the boundary conditions involves arbitrary entire functions of …

We develop the machinery of boundary triplets for one-dimensional operators generated by
formally self-adjoint quasi-differential expression of arbitrary order on a finite interval. The …

We discuss inverse spectral theory for singular differential operators on arbitrary intervals
$(a, b)\subseteq\mathbb {R} $ associated with rather general differential expressions of the …