A class of power bounded operators which are similar to contractions

Let it be a power bounded operator, and let M be its invariant subspace such that R\M is similar to a unilateral shift of finite multiplicity and PM±R\M± is similar to a Co-contraction. Then it is similar to a contraction.

Elmentve itt :
Bibliográfiai részletek
Szerző: Gamal Maria F.
Dokumentumtípus: Cikk
Megjelent: Bolyai Institute, University of Szeged Szeged 2014
Sorozat:Acta scientiarum mathematicarum 80 No. 3-4
Kulcsszavak:Matematika
Tárgyszavak:
mtmt:http://dx.doi.org/10.14232/actasm-014-267-4
Online Access:http://acta.bibl.u-szeged.hu/34851
Leíró adatok
Tartalmi kivonat:Let it be a power bounded operator, and let M be its invariant subspace such that R\M is similar to a unilateral shift of finite multiplicity and PM±R\M± is similar to a Co-contraction. Then it is similar to a contraction.
Terjedelem/Fizikai jellemzők:625-637
ISSN:0001-6969