Found 23 Documents (Results 1–23)
A classification of \(n\)-tuples of commuting shifts of finite multiplicity. (English) Zbl 1507.47021
MSC:
47A13
Busch-Gudder metric on the cone of positive semidefinite operators and its isometries. (English) Zbl 1507.47120
Positive isometric averaging operators on \({\ell^2(\mathbb{Z}, \mu)}\). (English) Zbl 1387.47024
Reviewer: Mirosława Zima (Rzeszów)
Dual Toeplitz operators on the sphere via spherical isometries. (English) Zbl 1357.47034
Reviewer: Yuri I. Karlovich (Cuernavaca)
Shift-type properties of commuting, completely non doubly commuting pairs of isometries. (English) Zbl 1310.47031
Reviewer: Sameer Chavan (Kanpur)
Essential normality of operators close to isometries. (English) Zbl 1272.47036
Reviewer: Janko Bračič (Ljubljana)
MSC:
47B20
Semigroups of partial isometries and symmetric operators. (English) Zbl 1226.47045
Reviewer: Michael Perelmuter (Kyïv)
Isometric equivalence of certain operators on Banach spaces. (English) Zbl 1120.47001
Reviewer: Vladislav Skopin (Lipetsk)
Wold decompositions and the unitary model for bi-isometries. (English) Zbl 1082.47007
Reviewer: Andrzej Sołtysiak (Poznań)
Analytic equivalence and similarity of operators. (English) Zbl 1055.47002
Reviewer: Line Baribeau (Québec)
Isometries of some Banach spaces of analytic functions. (English) Zbl 0995.46012
Reviewer: Nicolae Popa (Bucureşti)
Equivalence between the dilation and lifting properties of an ordered group through multiplicative families of isometries. A version of the commutant lifting theorem on some lexicographic groups. (English) Zbl 1002.47002
Reviewer: Andrzej Sołtysiak (Poznań)
The Kreĭn-Langer problem for Hilbert space operator valued functions on the band. (English) Zbl 0937.47040
Reviewer: Trandafir Balan (Craiova)
Local semigroups of isometries in \(\Pi_ \kappa\)-spaces and related continuation problems for \(\kappa\)-indefinite Toeplitz kernels. (English) Zbl 0778.47024
Reviewer: T.Ando (Sapporo)
Extensions of intertwining relations. (English) Zbl 0676.47003
Reviewer: Wu Jingbo
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