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On functions with bounded remainder

P. Hellekalek, Gerhard Larcher (1989)

Annales de l'institut Fourier

Let T : / / be a von Neumann-Kakutani q - adic adding machine transformation and let ϕ C 1 ( [ 0 , 1 ] ) . Put ϕ n ( x ) : = ϕ ( x ) + ϕ ( T x ) + ... + ϕ ( T n - 1 x ) , x / , n . We study three questions:1. When will ( ϕ n ( x ) ) n 1 be bounded?2. What can be said about limit points of ( ϕ n ( x ) ) n 1 ? 3. When will the skew product ( x , y ) ( T x , y + ϕ ( x ) ) be ergodic on / × ?

On integer points in polygons

Maxim Skriganov (1993)

Annales de l'institut Fourier

The phenomenon of anomaly small error terms in the lattice point problem is considered in detail in two dimensions. For irrational polygons the errors are expressed in terms of diophantine properties of the side slopes. As a result, for the t -dilatation, t , of certain classes of irrational polygons the error terms are bounded as n q t with some q > 0 , or as t ϵ with arbitrarily small ϵ > 0 .

On normal numbers mod 2

Youngho Ahn, Geon Choe (1998)

Colloquium Mathematicae

It is proved that a real-valued function f ( x ) = exp ( π i χ I ( x ) ) , where I is an interval contained in [0,1), is not of the form f ( x ) = q ( 2 x ) ¯ q ( x ) with |q(x)|=1 a.e. if I has dyadic endpoints. A relation of this result to the uniform distribution mod 2 is also shown.

On some remarkable properties of the two-dimensional Hammersley point set in base 2

Peter Kritzer (2006)

Journal de Théorie des Nombres de Bordeaux

We study a special class of ( 0 , m , 2 ) -nets in base 2. In particular, we are concerned with the two-dimensional Hammersley net that plays a special role among these since we prove that it is the worst distributed with respect to the star discrepancy. By showing this, we also improve an existing upper bound for the star discrepancy of digital ( 0 , m , 2 ) -nets over 2 . Moreover, we show that nets with very low star discrepancy can be obtained by transforming the Hammersley point set in a suitable way.

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