I. Braeutigam

collaborators

2 papers

math.SP2015

Deficiency numbers of operators generated by infinite Jacobi matrices

I. N. Braeutigam, K. A. Mirzoev

Let $A_{j}, B_{j}$ $(j = 0, 1, \dots)$ be $m \times m$ matrices, whose elements are complex numbers, $A_{j}$ are selfadjoint matrices and $B_{j}^{- 1}$ exist. We study the deficiency index prob…

math.SP2015

Spectral analysis of one-term symmetric differential operators of even order with interior singularity

I. N. Braeutigam

In this paper we discuss the spectral properties of one-term symmetric differential operators of even order with interior singularity, namely, we determine the deficiency numbers,…