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Generalized Toeplitz operators, restrictions to invariant subspaces and similarity problems.

Gilles Cassier
Journal of Operator Theory, 2005, 53 (1), pp.49-89
Article dans une revue hal-00864608v1
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EXTENDED SPECTRUM AND EXTENDED EIGENSPACES OF QUASI-NORMAL OPERATORS

Gilles Cassier , Hasan Alkanjo
Banach Journal of Mathematical Analysis, 2017, Volume 11 (Number 2), pp.266-281
Article dans une revue hal-01175460v2
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Extended Spectrum, Extended Eigenspaces and Normal Operators

Gilles Cassier , Hasan Alkanjo
Journal of Mathematical Analysis and Applications, 2014, 418 (Issue 1), pp.305-316
Article dans une revue hal-00864578v1

Cyclicity Results for Some Antianalytic Toeplitz Operators Acting on Hp

Gilles Cassier , Réda Choukrallah
Extracta Mathematicae, 2012, 27 (1), pp.31-58
Article dans une revue hal-00864217v1

Factorisation Spatiale

Gilles Cassier , Jean Esterle
Journal of Operator Theory, 2009, 62 (1), pp.111-123
Article dans une revue hal-00864547v1
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Aluthge operator field and its numerical range and spectral properties

Gilles Cassier , Thomas Perrin
Integral Equations and Operator Theory, 2021, 93 (4), Article 41 (20 p.). ⟨10.1007/s00020-021-02656-2⟩
Article dans une revue hal-02995331v1
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Harnack parts for some truncated shifts

Gilles Cassier , Mohammed Benharrat
Linear and Multilinear Algebra, In press, ISSN: 0308-1087 (Print) 1563-5139 (Online) Journal homepage: https://www.tandfonline.com/loi/glma20, ⟨10.1080/03081087.2020.1750549⟩
Article dans une revue hal-02397732v1
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Harnack parts for 4-by-4 truncated shift

Gilles Cassier , Mehdi Naimi , Mohammed Benharrat
Advances in Operator Theory, 2023, 9 (11), ⟨10.1007/s43036-023-00309-2⟩
Article dans une revue hal-04168163v2

Generalized Extremal Vectors and Some New Properties

Gilles Cassier , Jérôme Verliat
Springer. 22nd International Workshop in Operator Theory and its Applications, Jul 2011, Séville, Spain. Operator Theory: Advances and Applications, 236, pp.117-131, 2014, Concrete Operators, Spectral Theory, Operators in Harmonic Analysis and Approximation
N°spécial de revue/special issue hal-00864234v1

Stability for Some Operator Classes by Aluthge Transform

Gilles Cassier , Jérôme Verliat
Operator Theory Live, Theta, 2010, pp.51-67
Article dans une revue hal-00864094v1
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On the set of upper bounds for a finite family of self-adjoint operators

Gilles Cassier , Mohand Ould Ali
Theta,Bucharest. 25th International Conference on Operator Theory, Jun 2014, Timisoara, Romania. 18, pp.1-14, 2016, Theta Series in Advanced Mathematics
Proceedings/Recueil des communications hal-00980617v1
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HARNACK parts of ρ-Contractions

Gilles Cassier , Mohammed Benharrat , Soumia Belmouhoub
Journal of Operator Theory, 2018, Volume 80 (Issue 2), pp.453-480
Article dans une revue hal-01417360v2