PORTUGALIAE MATHEMATICA Vol. 56, No. 2, pp. 205220 (1999) 

Formes Lineaires d'Approximation et Irrationalite de Valeurs de $q$FonctionsDaniel Duverney24 Place du Concert, 59800 Lille  FRANCEAbstract: Let $q$ be a rational integer, with $\vv q\geq 2$. Let $f$ be a complex function, analytic in $\vv x<R$, and satisfying a Poincarétype equation of the form Full text of the article:
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