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Roman Urban's papers

    Accepted

  • with R. Penney
    Estimates for the Poisson kernel on higher rank NA groups
    Colloq. Math.
  • A note on density modulo 1 of certain sets of sums
    Funct. Approx. Comment. Math.
  • with J. Zienkiewicz
    Dimension free estimates for Riesz transforms of some Schrödinger operators
    Israel J. Math.

    2009

  • with D. Buraczewski, E. Damek, Y. Guivarc'h and A. Hulanicki
    Tail-homogeneity of stationary measures for some multidimensional stochastic recursions
    Probab. Theory Related Fields 145, No.3-4, 385-420
  • Multiplicatively independent integers and dense modulo 1 sets of sums
    Unif. Distrib. Theory 4, No.1 (2009), 27-33

    2008

  • with J. Zienkiewicz
    Fractional time-dependent Schrödinger equation on the Heisenberg group
    Math. Z. 260, No.4 (2008), 931-948
  • A survey of results on density modulo 1 of double sequences containing algebraic numbers
    Acta Math. Univ. Ostrav. 16, (2008), 31-43
  • Algebraic numbers and density modulo 1
    J. Number Theory 128, No.3 (2008), 645-661
    Corrigendum: J. Number Theory 129, No.11 (2009), 2879-2881
  • Sequences of algebraic numbers and density modulo 1
    Publ. Math. Debrecen 72, No.1-2 (2008), 141-154

    2007

  • Sequences of algebraic integers and density modulo 1
    J. Theor. Nombres Bordeaux 19, No. 3 (2007), 755-762
  • On density modulo 1 of some expressions containing algebraic integers
    Acta Arith. 127, No.3 (2007), 217-229
  • with J. Zienkiewicz
    Weak type (1,1) estimates for a class of discrete rough maximal functions
    Math. Res. Lett. 14, No.2 (2007), 227-237

    2006

  • with D. Buraczewski, T. Martinez and J.L. Torrea
    On the Riesz transform and weighted inequalities associated with the ultraspherical polynomials
    J. Anal. Math. 98 (2006), 113-143

    2005

  • with Y. Guivarc'h
    Semigroup actions on tori and stationary measures on projective spaces
    Studia Math. 171, No.1 (2005), 33-66
    Corrigendum: Studia Math. 183, No.2 (2007), 195-196

    2004

  • Note on the factorization of the Haar measure on finite Coxeter groups
    Probab. Math. Statist. 24, No.1 (2004), 173-180
  • Estimates for the mixed derivatives of the Green functions on homogeneous manifolds of negative curvature
    Electron. J. Differential Equations Vol. 2004, No.145 (2004), 1-10
  • Estimates for derivatives of the Green functions on homogeneous manifolds of negative curvature
    Acta Math. Univ. Comen. New Ser. 73, No.1 (2004), 43-53

    2003

  • Estimates for derivatives of the Green functions for the noncoercive differential operators on homogeneous manifolds of negative curvature, II
    Electron. J. Differential Equations Vol. 2003, No.86 (2003), 1-8
  • Estimates for derivatives of the Green functions for the noncoercive differential operators on homogeneous manifolds of negative curvature
    Potential Analysis 19 No.4 (2003), 317-339

    2002

  • A remark on the Poisson kernels on homogeneous manifolds of negative curvature
    Probab. Math. Statist. 22, No.2 (2002), 289-291
  • Estimates for the derivatives of the Poisson kernels on homogeneous manifolds of negative curvature
    Math. Z. 240 No.4 (2002), 745-766
  • with R. Penney
    Unbounded harmonic functions on homogeneous manifolds of negative curvature
    Colloq. Math. 91 No.1 (2002), 99-121

    2001

  • with E. Damek and A. Hulanicki
    Martin boundary for homogeneous riemannian manifolds of negative curvature at the bottom of the spectrum
    Rev. Mat. Iberoamericana. 17 No.2 (2001), 257-293
  • Estimates for the Poisson kernels on homogeneous manifolds of negative curvature and the boundary Harnack inequality in the noncoercive case
    Probab. Math. Statist. 21, No.1 (2001), 213-229
  • Noncoercive differential operators on homogeneous manifolds of negative curvature and their Green functions
    Colloq. Math. 88 No.1 (2001), 121-134

    1997

  • Some remarks on the random walk on finite groups
    Colloq. Math. 74 No.2 (1997), 287-298