Journals / Communications Faculty of Sciences University of Ankara Series A1: Mathematics and Statistics / 2019 / Cilt: 68 - Sayı: 1
MULTIPOINT SELFADJOINT QUASI-DIFFERENTIAL OPERATORS FOR FIRST ORDER
- Journal
- Communications Faculty of Sciences University of Ankara Series A1: Mathematics and Statistics
- Pages
- 964–972
- DOI
- —
Abstract
In the present paper, the aim is to described all selfadjoint extensions of the minimal operator generated by Örst order linear symmetric multipoint quasi-di§erential operator expression in the direct sum of weightedHilbert spaces of vector-functions deÖned at the semi-inÖnite intervals by using the Calkin-Gorbachuk method. We have also examine the structure of the spectrum of such extensions.