Upper bounds for the derivative of exponential sums Academic Article uri icon


  • The equality sup is shown, where the supremum is taken for all exponential sums p of the form are also proved for all exponential sums of the above form with arbitrary real exponents. These results improve inequalities of Lorentz and Schmidt and partially answer a question of Lorentz. © 1995 American Mathematical Society.

author list (cited authors)

  • Borwein, P., & Erdélyi, T.

citation count

  • 2

publication date

  • May 1995