Some exact inequalities of Hardy-Littlewood-Polya type for periodic functions
Laith Emil Azar1
Received28 Sept 2003
Abstract
We investigate the following problem: for a given A≥0, find
the infimum of the set of B≥0 such that the inequality
‖x(k)‖22≤A‖x(r)‖22+B‖x‖22, for k,r∈ℕ∪{0}, 0≤k<r, holds for all sufficiently
smooth functions.