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Journal of Operator Theory

Volume 46, Issue 1, Summer 2001  pp. 39-43.

Criss-cross commutivity. II

Authors:  Robin Harte
Author institution: School of Mathematics, Trinity College, Dublin 2, Ireland

Summary:  Equality of non zero spectra of reversed products have multivariable analogues for ``criss-cross commuting" tuples; some of these multi-variable results in turn have single variable consequences.

Keywords:  Criss-cross commutivity, spectrum, exactness, Kato invertibility

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