GAPS BETWEEN SOME SPECTRAL CHARACTERISTICS OF DIRECT SUM OF HILBERT SPACE OPERATORS

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İSMAİLOV Z., Mert R. Ö.

Operators and Matrices, cilt.16, sa.1, ss.337-347, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 16 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.7153/oam-2022-16-27
  • Dergi Adı: Operators and Matrices
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, MathSciNet, zbMATH
  • Sayfa Sayıları: ss.337-347
  • Anahtar Kelimeler: Operator norm, spectral radius, numerical radius
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

© 2022, Element D.O.O.. All rights reserved.In the present study, we investigate how the gaps between some spectral characteristics (operator norm, upper and lower bounds of spectrum and numerical range) of finite direct sum of Hilbert space operators are related to the same spectral characteristics of the coordinate operators.