• Certain estimates of oscillatory integrals and extrapolation 

      Al-Qassem, Hussain (2010 , Article)
      In this paper we study the boundedness properties of certain oscillatory integrals with polynomial phase. We obtain sharp estimates for these oscillatory integrals. By the virtue of these estimates and extrapolation we ...
    • On certain rough maximal operators and singular integrals 

      Al-Qassem, H. M. (2007 , Article)
      We study the L p mapping properties of a class of singular integral operators T p,Ω,h related to polynomial mappings. We prove that this class of singular operators and some of its related maximal operators are bounded on ...