Reviewer for Zentralblatt Fur Mathematik,
Springer-verlag, Berlin, Germany (ZMATH).
I refereed several papers in the following journals:
Canadian Journal
of Mathematics, Linear Algebra and its Applications, The Journal of
Mathematical Analysis and Applications, Studia Mathematica, Rendiconti
Del Circolo
Mathematico Di Palermo,
Banach Journal of Mathematical Analysis, International Journal of Pure
and Applied Mathematical Sciences, and International Journal of
Mathematics and
Mathematical Sciences.
July, 2002: On the local
spectral properties of weighted shift operators, The Summer
School of Safi, Safi, Morocco.
September, 2002: Boundary
behaviour of functions of bounded type, The International
Workshop of NATO, Yerevan, Armenia.
June, 2003: Local spectral
properties of weighted shift operators, The International
Conference OTOA 2003, Palermo, Sicily, Italy.
August, 2003: Local spectra of
weighted shift operators, The International Conference “Banach
Algebras 2003”, Edmonton, Alberta, Canada.
November, 2003: The local
spectral properties of weighted shift operators, Mathematics
Seminar at Maribor University, Maribor, Slovenia.
May, 2005: Cyclic inner
functions in Bergman type spaces, The Conference in Honor of
Heydar Radjavi’s 70th Birthday, Bled, Slovenia.
June, 2005: Cyclic inner
functions in Bergman type spaces, Mathematics Seminar at Leeds
University, Leeds, UK.
June, 2005: Spectrum of
bilateral shifts with operator-valued weights, The 33rd Canadian
Operator Symposium(COSy), Ottawa, Canada.
July, 2005: Spectrum of
bilateral shifts with operator-valued weights, The International
Conference “Banach Algebras 2005”, Bordeaux, France.
May, 2006: The SVEP is not
preserved under sums and products of commuting operators,
L’Ecole de Printemps d’Analyse Fonctionnelle, Rabat, Morocco.
March, 2007: Linear Preservers
and Local Spectrum, Mathematics Seminar at Mississippi States
University, Mississippi, USA.
July, 2007: Spectral pictures
of operator-valued weighted bi-shifts, The International
Conference Banach Algebras 2007, Quebec, Canada.
August, 2007: Linear maps on
$M_n(\Bbb{C})$ preserving the local spectral radius, Mathematics
Seminar at Delaware University, Newark DE, USA.
August, 2007: Linear maps on
$M_n(\Bbb{C})$ preserving the local spectral radius, Mathematics
Seminar at George Washington University, Washington, USA.
May, 2008: Linear maps
preserving the minimum modulus, The International Conference of
5th Linear Algebra Workshop, Kranjska Gora, Slovenia.
June, 2008: Linear maps
preserving further spectral quantities, The International
Conference on Linear Preservers and Operator Theory, Meknes, Morocco.
December, 2008: On linear
preserver problems, The International Conference on Hilbert
Spaces of Analytic Functions, Montreal, Canada.