Invariant subspaces of multiple tensor products

Regular subspaces are tensor products of subspaces. The structure of regular subspaces that are invariant or reducing for the tensor product of a finite collection of Hilbert space operators is entirely characterized. Necessary and sufficient conditions for a multiple tensor product of operators to...

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Elmentve itt :
Bibliográfiai részletek
Szerző: Kubrusly Carlos S.
Dokumentumtípus: Cikk
Megjelent: Bolyai Institute, University of Szeged Szeged 2009
Sorozat:Acta scientiarum mathematicarum 75 No. 3-4
Kulcsszavak:Matematika
Tárgyszavak:
Online Access:http://acta.bibl.u-szeged.hu/16327
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520 3 |a Regular subspaces are tensor products of subspaces. The structure of regular subspaces that are invariant or reducing for the tensor product of a finite collection of Hilbert space operators is entirely characterized. Necessary and sufficient conditions for a multiple tensor product of operators to be a unilateral shift are established, and it is proved that a multiple tensor product of operators is a completely nonunitary contraction if and only if each factor is a contraction, one of them being completely nonunitary. 
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