It is shown that the maximal operator of the Marcinkiewicz means of a tempered Ε½ 2 . Ε½ 2 . distribution is bounded from H R to L R for all pp F Ο± and, consep p 0 Ε½ . quently, is of weak type 1, 1 , where p -1. As a consequence we obtain a 0 generalization for Fourier transforms of a summability resu
A Generalization of the Theorem of Hardy: A Most General Version of the Uncertainty Principle for Fourier Integrals
β Scribed by Christian Pfannschmidt
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 406 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
β¦ Synopsis
N . WIENER remarked that a non-identically vanishing real function and its Fourier transform cannot both decay "very fast". It was HAR.DY who specified and proved this assertion in 1933. In the present paper Hardy's theorem will be generalized. Moreover, it will be shown that further weakening of these assumptions does not make sense.
π SIMILAR VOLUMES
Let K = {Itl,. . . , k,} and L ={I1,. . . , Z,} be two sets of non-negative integers and assume ki > l j for every i , j . Let T be an L-intersecting family of subsets of a set of n elements. Assume the size of every set in T is a number from K. We conjecture that 1 ' f l 5 (: ). We prove that our c