Displaying 361 – 380 of 648

Showing per page

On the behaviour close to the unit circle of the power series with Möbius function coefficients

Oleg Petrushov (2014)

Acta Arithmetica

Let ( z ) = n = 1 μ ( n ) z n . We prove that for each root of unity e ( β ) = e 2 π i β there is an a > 0 such that ( e ( β ) r ) = Ω ( ( 1 - r ) - a ) as r → 1-. For roots of unity e(l/q) with q ≤ 100 we prove that these omega-estimates are true with a = 1/2. From omega-estimates for (z) we obtain omega-estimates for some finite sums.

On the discrepancy of sequences associated with the sum-of-digits function

Gerhard Larcher, N. Kopecek, R. F. Tichy, G. Turnwald (1987)

Annales de l'institut Fourier

If w = ( q k ) k N denotes the sequence of best approximation denominators to a real α , and s α ( n ) denotes the sum of digits of n in the digit representation of n to base w , then for all x irrational, the sequence ( s α ( n ) · x ) n N is uniformly distributed modulo one. Discrepancy estimates for the discrepancy of this sequence are given, which turn out to be best possible if α has bounded continued fraction coefficients.

Currently displaying 361 – 380 of 648