q-deformed circularity for an unbounded operator in Hilbert space
Schôichi Ôta
Colloquium Mathematicae, Tome 120 (2010), p. 191-199 / Harvested from The Polish Digital Mathematics Library
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The notion of strong circularity for an unbounded operator is introduced and studied. Moreover, q-deformed circularity as a q-analogue of circularity is characterized in terms of the partially isometric and the positive parts of the polar decomposition.

Publié le : 2010-01-01
EUDML-ID : urn:eudml:doc:283707 
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Schôichi Ôta. q-deformed circularity for an unbounded operator in Hilbert space. Colloquium Mathematicae, Tome 120 (2010) pp. 191-199. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm120-2-2/