Strong unitary equivalence and approximately unitary equivalence of normal compact operators over topological spaces
نویسندگان
چکیده
منابع مشابه
Unitary equivalence of normal matrices over topological spaces
Let A and B be normal matrices with coefficients that are continuous complexvalued functions on a topological space X, and suppose these matrices have the same distinct eigenvalues at each point of X. We use obstruction theory to establish necessary and sufficient conditions for A and B to be unitarily equivalent. We also determine bounds on the number of possible unitary equivalence classes in...
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ژورنال
عنوان ژورنال: Operators and Matrices
سال: 2018
ISSN: 1846-3886
DOI: 10.7153/oam-2018-12-27