Research interests:


Complex Analysis, Operator Theory, Functional Analysis,

Harmonic Analysis, Dynamical Systems.


MatSciNet Reviews of my papers here


Published articles


The multiplicatuve Hilbert matrix (with O. F. Brevig, K.-M. Perfekt, K. Seip, and D. Vukotić), Advances in Mathematics, 302 (2016), 410-432.

Mean Lipschitz conditions on Bergman space (with P. Galanopoulos and G. Stylogiannis), J. Math. Anal. Appl. 424 (2015), 221-236.


Generalized Hilbert operators (with P. Galanopoulos, D. Girela and

J. A. Pelaez), Ann. Acad. Sci. Fenn. Math. 39 (2014), 231258.


Semigroups of composition operators and integral operators in spaces of analytic functions, (with O. Blasco, M. D. Contreras, S. Diaz-Madrigal, J. Martinez and M. Papadimitrakis) Ann. Acad. Sci. Fenn. Math. 38 (2013), 6789.


Cesaro operators on Hardy spaces of the half-plane (with A. Arvanitidis), Canad. Math. Bull. 56 (2013), 229240.


Isometric equivalence of integration operators (with N. Gal and J. Jamison), Complex Anal. Oper. Theory (2010), 245-255.

Semigroups of Composition Operators in BMOA and the Extension of a Theorem of Sarason (with O. Blasco, M. Contreras, S. Diaz-Madrigal and J. Martinez), Integral Equations Operator Theory 61 (2008), 4562.

Volterra operators on spaces of analytic functions a survey,

Proceedings of the First Advanced Course in Operator Theory and Complex Analysis, 51--68, Univ. Sevilla Secr. Publ., Seville, 2006.



Hausdorff matrices and composition operators,

llinois J. Math. 45 (2001), 757-773 (with P. Galanopoulos)



Composition operators and the Hilbert matrix,

Studia Math. 140(2) (2000), 191-198 (with E. Diamantopoulos)



Weighted integrals of analytic functions,

Acta Sci. Math. (Szeged) 66 (2000), 651-664



Cauchy transforms and Cesaro averaging operators,

Acta Sci. Math. (Szeged) 65 (1999), 505-513 (with J. Cima)



A Volterra type operator on spaces of analytic functions,

Contemporary Math. 232 (1999), 299-311 (with R. Zhao)



Semigroups of Composition operators on spaces of analytic

functions, a review, Contemporary Math. 213 (1998), 229-232



Integration operators on Bergman spaces, Indiana Univ. Math. J. 46 (1997), 337-356 (with A. Aleman)

  • On the Bergman space norm of the Cesaro operator, Arch. Math. J. 46 (1996), 312-318.
  • Semigroups of composition operators on Dirichlet spaces, Results in Math. 30 (1996), 165-173.
  • An integral operator on Hp, Complex Variables 28 (1995), 149-158. (with A. Aleman)
  • Metrical and topological properties of a generalized Libera transform, Arch. Math. 63 (1994), 517-524. (with N. Danikas and S. Ruscheweyh)
  • The Koebe semigroup and a class of averaging operators on Hp (D), Trans. Amer. Math. Soc. 339 (1993), 337-350.
  • The Cesaro operator on bounded analytic functions, Analysis 13 (1993), 295-299. (with N. Danikas)
  • The Cesaro operator in bounded on H1, Proc. Amer. Math. Soc. 110 (1990), 461-462.
  • Semigroups of composition operators on Bergman spaces, Bull. Austral. Math. Soc. 35 (1987), 397-406.
  • On a class of composition semigroups in Hardy spaces, J. Math. Anal. Appl. 127 (1987), 122-129.
  • Composition semigroups and the Cesaro operator on Hp, J. London Math. Soc. (2) 36 (1987), 153-164.
  • Weighted composition semigroups on Hardy spaces, Linear Algebra Appl. 84 (1986), 359-371.
  • A net of exponentials converging to a nonmeasurable function, Amer. Math. Monthly 90 (1983), 394-396. (with L. A. Rubel)