Zameddin I. Ismailov
This article describes all selfadjoint extensions of the minimal operator generated by a linear singular multipoint symmetric differential-operator expression for first order in the direct sum of Hilbert spaces of vector-functions. This description is done in terms of the boundary values, and it uses the Everitt-Zettl and the Calkin-Gorbachuk methods. Also the structure of the spectrum of these extensions is studied.
Submitted September 19, 2013. Published October 18, 2013.
Math Subject Classifications: 47A10.
Key Words: Everitt-Zettl and Calkin-Gorbachuk methods; singular multipoint; differential operators; selfadjoint extension; spectrum
Show me the PDF file (199 KB), TEX file, and other files for this article.
| Zameddin I. Ismailov |
Department of Mathematics, Faculty of Sciences
Karadeniz Technical University
61080, Trabzon, Turkey
Return to the EJDE web page