In this paper, we will present several upper bounds for the numerical radii of a operator matrices. We use these bounds to generalize and improve some well-known numerical radius inequalities. We provide a refinement of an earlier numerical radius inequality due to (Bani-Domi & Kittaneh, 2021) [Norm and numerical radius inequalities for Hilbert space operators], (Bani-Domi & Kittaneh, 2021) [Refined and generalized numerical radius inequalities for operator matrices] and (Al-Dolat & Kittaneh, 2023) [Upper bounds for the numerical radii of powers of Hilbert space operators].
Numerical radius, Usual operator norm, Operator matrix, Buzano inequality.
Birincil Dil | İngilizce |
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Konular | Yazılım Mühendisliği (Diğer) |
Bölüm | Makaleler |
Yazarlar | |
Erken Görünüm Tarihi | 30 Temmuz 2023 |
Yayımlanma Tarihi | 1 Eylül 2023 |
Yayımlandığı Sayı | Yıl 2023Cilt: 22 |