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-Sidon sets
Authors:P. Lefè  vre   L. Rodrí  guez-Piazza
Affiliation:Université d'Artois, Faculté Jean Perrin, rue Jean Souvraz S.P. 18 62307 Lens cedex, France ; Universidad de Sevilla, Faculdad de Matematica, Apdo 1160, 41080 Sevilla, Spain
Abstract:
The aim of this paper is to prove that for every $p<{frac43}$, every $p$-Rider set is a $q$-Sidon set for all $q>{frac p{2-p}}cdot$ This gives some positive answers for the union problem of $p$-Sidon sets. We also obtain some results on the behavior of the Fourier coefficient of a measure with spectrum in a $p$-Rider set.

Keywords:$p$-Sidon-ps   $p$-Rider set   $q$-Sidon set   quasi-independent sets   random Fourier series
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