Unitary equivalence of operators and dilations
Chafiq Benhida
Studia Mathematica, Tome 162 (2004), p. 253-255 / Harvested from The Polish Digital Mathematics Library
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Given two contractions T and T' such that T'-T is an operator of finite rank, we prove, under some conditions, the unitary equivalence of the unitary parts of the minimal isometric dilations (respectively minimal co-isometric extensions) of T and T'.

Publié le : 2004-01-01
EUDML-ID : urn:eudml:doc:286090 
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Chafiq Benhida. Unitary equivalence of operators and dilations. Studia Mathematica, Tome 162 (2004) pp. 253-255. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm164-3-4/