Geodesic
The Relationship Between ε-Kronecker Sets and Sidon Sets
Canadian mathematical bulletin, Tome 59 (2016) no. 3, pp. 521-527

Voir la notice de l'article provenant de la source Cambridge University Press

A subset $E$ of a discrete abelian group is called $\varepsilon$ -Kronecker if all $E$ -functions of modulus one can be approximated to within ε by characters. $E$ is called a Sidon set if all bounded $E$ -functions can be interpolated by the Fourier transform of measures on the dual group. As $\varepsilon$ -Kronecker sets with $\varepsilon \,<\,2$ possess the same arithmetic properties as Sidon sets, it is natural to ask if they are Sidon. We use the Pisier net characterization of Sidonicity to prove this is true.
DOI : 10.4153/CMB-2016-002-3
Mots-clés : 43A46, 42A15, 42A55, Kronecker set, Sidon set 
Hare, Kathryn; Ramsey, L. Thomas. The Relationship Between ε-Kronecker Sets and Sidon Sets. Canadian mathematical bulletin, Tome 59 (2016) no. 3, pp. 521-527. doi: 10.4153/CMB-2016-002-3
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