Nesterenko's criterion when the small linear forms oscillate

Stéphane Fischler (1)

1 LM-Orsay - Laboratoire de Mathématiques d'Orsay

In this paper we generalize Nesterenko's criterion to the case where the small linear forms have an oscillating behaviour (for instance given by the saddle point method). This criterion provides both a lower bound for the dimension of the vector space spanned over the rationals by a family of real numbers, and a measure of simultaneous approximation to these numbers (namely, an upper bound for the irrationality exponent if 1 and only one other number are involved). As an application, we prove an explicit measure of simultaneous approximation to $\zeta(5)$, $\zeta(7)$, $\zeta(9)$, and $\zeta(11)$, using Zudilin's proof that at least one of these numbers is irrational.

Mots clés: Distribution modulo one; Irrationality; Linear independence over a field; Measures of irrationality and of transcendence; Distribution modulo one.

Domaines: Théorie des nombres [math.NT]

Stéphane Fischler. Nesterenko's criterion when the small linear forms oscillate. Archiv der Math., 2012, 98 (2), pp.143--151. ⟨hal-00659037⟩