Comportement local moyen de la fonction de Brjuno
  We describe the average behaviour of the Brjuno function in the neighbourhood of any given point of the unit interval. In particular, we show that its Lebesgue set is the set of Brjuno numbers and we fi nd the asymptotic behaviour of the modulus of continuity of its integral. 
Michel Balazard (IML), Bruno Martin (LMPA)
math.NT math.DS