In this paper, a study is made on two well-known operator matrices; the Rhaly operator Rₐ and the generalized difference operator Δab. Firstly, some compactness results for the operators Rₐ and Δab, ...
Two results are proved which concern Riesz points of upper triangular operator matrices. Applications are made to questions involving when Weyl's Theorem holds for an upper triangular operator matrix.
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