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Turkish Journal of Mathematics

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.

First Page

2071

Last Page

2079

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