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On approximation by Lüroth series

Karma Dajani, Cor Kraaikamp (1996)

Journal de théorie des nombres de Bordeaux

Let x ] 0 , 1 ] and p n / q n , n 1 be its sequence of Lüroth Series convergents. Define the approximation coefficients θ n = θ n ( x ) by q n x - p n , n 1 . In [BBDK] the limiting distribution of the sequence ( θ n ) n 1 was obtained for a.e. x using the natural extension of the ergodic system underlying the Lüroth Series expansion. Here we show that this can be done without the natural extension. In fact we will prove that for each n , θ n is already distributed according to the limiting distribution. Using the natural extension we will study the distribution for...

On the maximal run-length function in the Lüroth expansion

Yu Sun, Jian Xu (2018)

Czechoslovak Mathematical Journal

We obtain a metrical property on the asymptotic behaviour of the maximal run-length function in the Lüroth expansion. We also determine the Hausdorff dimension of a class of exceptional sets of points whose maximal run-length function has sub-linear growth rate.

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