On the similarity of operators of the type \(\text{sgn}\,x(-\frac{d^2}{dx^2}+c\delta)\) to a normal and a selfadjoint operator.

DOI10.1023/A:1025031519433zbMath1057.47050MaRDI QIDQ1889514

Illya M. Karabash, Aleksey S. Kostenko

Publication date: 2 December 2004

Published in: Mathematical Notes (Search for Journal in Brave)

similarity Weyl function spectral problem self-adjoint differential operator quasi-Hermitian extension

Linear symmetric and selfadjoint operators (unbounded) (47B25) General theory of ordinary differential operators (47E05)

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