On the connection between σϵ(A1 ⊕A2) and σϵ(A1), σϵ(A2) for certain special operators
Turkish Journal of Mathematics, cilt.48, sa.5, ss.995-1000, 2024 (SCI-Expanded, Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 48 Sayı: 5
- Basım Tarihi: 2024
- Doi Numarası: 10.55730/1300-0098.3555
- Dergi Adı: Turkish Journal of Mathematics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, MathSciNet, zbMATH, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.995-1000
- Anahtar Kelimeler: outer product, pseudospectrum, Tensor product
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
In this paper, the connection between the ϵ-pseudospectrum of the tensor product operator A1 ⊕ A2 and the ϵ-pseudospectrums of operators A1 and A2 has been investigated and some results are given about this connection under certain conditions.