BOUNDEDLY SOLVABLE NEUTRAL TYPE DELAY DIFFERENTIAL OPERATORS OF THE FIRST ORDER

Ismailov Z. I., Al Ipek P.

EURASIAN MATHEMATICAL JOURNAL, cilt.10, sa.3, ss.20-27, 2019 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.32523/2077-9879-2019-10-3-20-27
  • Dergi Adı: EURASIAN MATHEMATICAL JOURNAL
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.20-27
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this work, by using methods of operator theory, all boundedly solvable extensions of the minimal operator generated by a linear neutral type delay differential-operator expression of the first order in a Hilbert space of vector-functions on a finite interval are described. Furthermore, the geometry of spectrum sets of these operators is studied.