- Communications in Advanced Mathematical Sciences
- Vol: 5 Issue: 1
- Gap Between Operator Norm and Spectral Radius for the Square of Antidiagonal Block Operator Matrices
Gap Between Operator Norm and Spectral Radius for the Square of Antidiagonal Block Operator Matrices
Authors : Elif Otkun Çevik
Pages : 1-7
Doi:10.33434/cams.1022686
View : 10 | Download : 6
Publication Date : 2022-03-17
Article Type : Research
Abstract :In this work, the gap between operator norm and spectral radius for the square of antidiagonal block operator matrices in the direct sum of Banach spaces has been investigated, and also the gap between operator norm and numerical radius for the square of same matrices in the direct sum of Hilbert spaces has been studied.Keywords : Antidiagonal operator matrix, Numerical radius, Operator norm, Spectral radius