Listar Matemática por autor "Kesler, Robert"

Mostrando ítems 1-3 de 3

    • Lacunary discrete spherical maximal functions 

      Kesler, Robert; Lacey, Michael T.; Mena Arias, Darío Alberto (2019)
      We prove new l^p(Z^d) bounds for discrete spherical averages in dimensions d greater than or equal to 5. We focus on the case of lacunary radii, first for general lacunary radii, and then for certain kinds of highly ...

    • Sparse bounds for the discrete spherical maximal functions 

      Kesler, Robert; Lacey, Michael T.; Mena Arias, Darío Alberto (2020)
      We prove sparse bounds for the spherical maximal operator of Magyar, Stein and Wainger. The bounds are conjecturally sharp, and contain an endpoint estimate. The new method of proof is inspired by ones by Bourgain and ...

    • Uniform sparse bounds for discrete quadratic phase Hilbert transforms 

      Kesler, Robert; Mena Arias, Darío Alberto (2017-09)
      Consider the discrete quadratic phase Hilbert Transform acting on $\ell^{2}(\mathbb{Z})$ finitely supported functions $$ H^{\alpha} f(n) : = \sum_{m \neq 0} \frac{e^{i\alpha m^2} f(n - m)}{m}. $$ We prove that, ...