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Contribution Details

Type Journal Article
Scope Discipline-based scholarship
Title Mod-$\phi $ convergence: Approximation of discrete measures and harmonic analysis on the torus
Organization Unit
Authors
  • Reda Chhaibi
  • Freddy DELBAEN
  • Pierre-Loïc Méliot
  • Ashkan Nikeghbali
Item Subtype Original Work
Refereed Yes
Status Published in final form
Language
  • English
Journal Title Annales de l'Institut Fourier
Publisher Association des Annales de l'Institut Fourier
Geographical Reach international
ISSN 0373-0956
Volume 70
Number 3
Page Range 1115 - 1197
Date 2020
Abstract Text In this paper, we relate the framework of mod-φ convergence to the construction of approximation schemes for lattice-distributed random variables. The point of view taken here is the one of Fourier analysis in the Wiener algebra, allowing the computation of asymptotic equivalents of the local, Kolmogorov and total variation distances. By using signed measures instead of probability measures, we are able to construct better approximations of discrete lattice distributions than the standard Poisson approximation. This theory applies to various examples arising from combinatorics and number theory: number of cycles in permutations, number of prime divisors of a random integer, number of irreducible factors of a random polynomial, etc. Our approach allows us to deal with approximations in higher dimensions as well. In this setting, we bring out the influence of the correlations between the components of the random vectors in our asymptotic formulas.
Free access at DOI
Digital Object Identifier 10.5802/aif.3332
Other Identification Number merlin-id:19436
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