First order self-adjoint multipoint quasi-differential operators

Authors

RUKİYE ÖZTÜRK MERT
BÜLENT YILMAZ
ZAMEDDİN İSMAİLOV

DOI

10.3906/mat-1803-136

Abstract

In this paper, using the Calkin-Gorbachuk method, the general form of all self-adjoint operators generated by first order linear singular multipoint quasi-differential expressions in the direct sum of weighted Hilbert spaces of vector functions has been found. Later on, the geometry of the spectrum set of these type extensions was researched.

Keywords

Selfadjoint operators, multipoint quasi-differential expression, deficiency indices, spectrum

First Page

2071

Last Page

2079

Recommended Citation

MERT, RUKİYE ÖZTÜRK; YILMAZ, BÜLENT; and İSMAİLOV, ZAMEDDİN (2018) "First order self-adjoint multipoint quasi-differential operators," Turkish Journal of Mathematics: Vol. 42: No. 4, Article 41. https://doi.org/10.3906/mat-1803-136
Available at: https://journals.tubitak.gov.tr/math/vol42/iss4/41