professeur

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Photo

Adresse / Address

Bâtiment M2, Bureau 303 
Tel. : (+33)3.20.43.42.18. 
Fax: (+33) 3.20.43.43.02.
Email :Prenom.Nom(at)math dot univ-lille1 dot fr (si vous n'êtes pas un robot, remplacer (at) (par "@"), dot, le Prenom (Catalin) et le Nom (Badea) 

Publications et prépublications récentes/ Publications and recent preprints

• Publications

Recent papers

• Please write me if you want to have electronic or hard copies.
  
• (with S. Grivaux and V. Muller) The rate of convergence in the method of alternating projections,  St. Petersburg Math J
• (with Yu.I. Lyubich) Spectral properties and strong convergence of products and averages of Banach spaces projections,  Studia Math
• (with S. Grivaux and V. Muller) Epsilon-hypercyclic operators,  Ergodic Th Dynamical Syst
• (with B. Beckermann and M. Crouzeix) Intersections of several disks of the Riemann sphere as K-spectral sets,  Comm. Pure appl. Anal.
• (with S. Grivaux and V. Muller) Multiples of hypercyclic operators,  Proc. AMS.
• Bernstein Polynomials and Operator Theory,  Results in Math. (Birkhauser)
• (with V. Muller) On weak orbits of operators,  Topology Appl ; Jan Pelant memorial volume
• (with S. Grivaux) Faber-hypercyclic operators,  Israel J. Math.
• (with S. Grivaux) Size of the peripheral point spectrum under power or resolvent growth conditions,  J. Funct. Anal.
• (with S. Grivaux) Unimodular eigenvalues, uniformly distributed sequences and linear dynamics,  Advances in Math
• (with V. Muller) Subscalar operators and growth of resolvent,  J. Operator Th. 56(2006)
• The general linear equation is stable,  Nonlinear Funct. Anal. Appl. 10(2005)
• (with M. Mbekhta) Operators similar to partial isometries,  Acta Sci Math 71(2005)
• (with V. Muller) Growth conditions and inverse producing extensions,  J. Operator Th. 54(2005)
• (with M. Crouzeix, B. Delyon) Convex domains and K-spectral sets,  Math. Z. 252(2006)
• (with V. Muller) Invertible extensions and growth conditions ,  C.R. Acd. Sci. Paris Ser. I 339(2004), 21-26.
• Operators near completely polynomially dominated ones and similarity problems, J. Operator. Th., 49(2003), 3-23.
• Perturbations of operators similar to contractions and the commutator equation ,  Studia Math. 150(2002), 273-293.
• (with G. Cassier) Constrained von Neumann inequalities, Advances in Math. 166(2002), 260-297.
• (with V. Paulsen) Schur multipliers and operator-valued Foguel-Hankel operators,  Indiana Univ. Math. J. 50(2001), 1509-1522.
• (with M. Mbekhta) The stability radius of Fredholm linear pencils, J. Math. Anal. Appl., 260 (2001), no. 1, 159--172.

Etudiants en These / Ph. D. Students : Benoit Pruvost (these soutenue en 2003), Pierre Petitcunot (2008), Vincent Devinck (avec Sophie Grivaux), Oscar Devys

Coopération

Conference : Analyse 2011, Lille, juin 2011
Conference : Ecole d'Analyse, Le Touquet, septembre 2010
Conference : Operator Theory and Related Topics, Lille, mai-juin 2010
Conference : Rencontre d'analyse fonctionnelle et harmonique, Lille, avril 2008
Conference : Journees d'analyse fonctionnelle et harmonique, Lens, Mars 2007
Je suis le responsable du GDR AFHA : ''Analyse Fonctionnelle et Harmonique et Applications'': Groupement de Recherche du CNRS, GDR 2753 AFHA.
Je suis le responsable a Lille de :
• GDR 670 ''Réseau d'Algebres d'Opérateurs'': Groupement de Recherche du CNRS ; Responsable Emmanuel Germain
• EU Network in Noncommutative Geometry ; Responsable David EVANS