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math.FA2024
Three families of matrices
Alexander Pushnitski
This paper has an expository nature. We compare the spectral properties (such as boundedness and compactness) of three families of semi-infinite matrices and point out similarities…
math.FA2020★ 4 cited
The spectrum of some Hardy kernel matrices
Ole Fredrik Brevig, Karl-Mikael Perfekt, Alexander Pushnitski
For we consider the operator corresponding to the matrix \[\left(\frac{(nm)^{-\frac{1}{2}+α}}{[\max(n,m)]^{2α}}\right)_{n,m=1}^\infty.\] By int…