Abstract.
This paper studies pure subnormal k-tuples of operators \(\mathbb{S} = (S_{1} , \ldots ,S_{k} )\) with finite rank of self-commutators. It determines the substantial part of the conjugate of the joint point spectrum of \(\mathbb{S}^{ * } = {\left( {S^{ * }_{1} , \ldots ,S^{ * }_{k} } \right)}\) which is the union of domains in Riemann surfaces in some algebraic varieties in \(\mathbb{C}^{k} .\) The concrete form of the principal current [4] related to \(\mathbb{S}\) is also determined. Besides, some operator identities are found for \(\mathbb{S}.\)
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Xia, D. Right Spectrum and Trace Formula of Subnormal Tuples of Operators of Finite Type. Integr. equ. oper. theory 55, 439–452 (2006). https://doi.org/10.1007/s00020-005-1393-1
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DOI: https://doi.org/10.1007/s00020-005-1393-1