Found 48 Documents (Results 1–48)
On the isolated points of the operators satisfying absolute condition inequality. (English) Zbl 07825930
Representation and normality of \(*\)-paranormal absolutely norm attaining operators. (English) Zbl 1525.47045
Certain properties involving the unbounded operators \(p(T)\), \(TT^\ast\), and \(T^\ast T\); and some applications to powers and nth roots of unbounded operators. (English) Zbl 1517.47036
Operator inequalities related to the arithmetic-geometric mean inequality and characterizations. (English) Zbl 1519.47016
Normal operators and their generalizations. (English) Zbl 07678106
Aron, Richard M. (ed.) et al., Operator and norm inequalities and related topics. Cham: Birkhäuser. Trends Math., 355-396 (2022).
Spherical Aluthge transform, spherical \(p\) and log-hyponormality of commuting pairs of operators. (English) Zbl 1507.47057
MSC:
47B20
On operators which attain their norm on every reducing subspace. (English) Zbl 07484165
Reviewer: Sheldon Dantas (València)
On \(m\)-quasi class \(\mathcal{A}(k^*)\) and absolute-\((k^*,m)\)-paranormal operators. (English) Zbl 1484.47036
On commutator of generalized Aluthge transformations and Fuglede-Putnam theorem. (English) Zbl 1503.47030
On operators satisfying \(T^{\ast m}(T^\ast|T|^{2k}T)^{1/(k+1)}T^m \geq T^{\ast m}|T|^2T^m\). (English) Zbl 06847400
Composition operators on Hilbert spaces of entire functions with analytic symbols. (English) Zbl 1369.32005
Generalizations of Kaplansky’s theorem involving unbounded linear operators. (English) Zbl 1447.47028
Reviewer: Eungil Ko (Seoul)
Fuglede-Putnam type theorems via the generalized Aluthge transform. (English) Zbl 1314.47033
Reviewer: Janko Bračič (Ljubljana)
Tensor products and the spectral continuity for \(k\)-quasi-\(\ast\)-class A operators. (English) Zbl 1275.47046
A note on quasi-paranormal operators. (English) Zbl 1291.47016
Reviewer: Eungil Ko (Seoul)
Class \(wA(s,t)\) operators and quasisimilarity. (English) Zbl 1276.47028
Reviewer: Sameer Chavan (Kanpur)
On \(\ast\)-paranormal contractions and properties for \(\ast\)-class \(A\) operators. (English) Zbl 1234.47008
Some approximants in operator algebras. (English) Zbl 1200.47051
Reviewer: Mohammad Sal Moslehian (Mashhad)
A characterization of normal semigroups. (English) Zbl 1135.47041
MSC:
47D06
Weyl’s theorem for perturbations of paranormal operators. (English) Zbl 1117.47003
Reviewer: Takeaki Yamazaki (Yokohama)
On operators satisfying \(T^{*}|T^2|T\geq T^{*}|T|^{2}T\). (English) Zbl 1109.47005
Reviewer: Vladimir V. Peller (East Lansing)
Isolated point of spectrum of \(p\)-hyponormal, log-hyponormal operators. (English) Zbl 1047.47017
Reviewer: Andrzej Sołtysiak (Poznań)
Relations between two inequalities \((B^{\frac r2} A^p B^{\frac r2})^{\frac r{p+r}}\geq B^r\) and \(A^p\geq(A^{\frac p2} B^r A^{\frac p2})^{\frac p{p+r}}\) and their applications. (English) Zbl 1028.47013
Reviewer: Omar Hirzallah (Zarqa)
\(\omega\)-hyponormal operators. II. (English) Zbl 0962.47007
Reviewer: Takashi Yoshino (Sendai)
On log-hyponormal operators. (English) Zbl 0935.47015
Reviewer: Takashi Yoshino (Sendai)
On partial isometries. (English) Zbl 0437.47015
MSC:
47B20
Certain convexoid operators. (English) Zbl 0266.47025
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