First order self-adjoint multipoint quasi-differential operators


Ozturk Mert R., YILMAZ B., İSMAİLOV Z.

TURKISH JOURNAL OF MATHEMATICS, cilt.42, ss.2071-2079, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 42 Konu: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.3906/mat-1803-136
  • Dergi Adı: TURKISH JOURNAL OF MATHEMATICS
  • Sayfa Sayıları: ss.2071-2079

Özet

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.