On the multifractal spectrum of weighted Birkhoff averages

Balázs Bárány; Michał Rams; Ruxi Shi

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arXiv · 2006.06774

On the multifractal spectrum of weighted Birkhoff averages

Balázs Bárány·Michał Rams·Ruxi Shi

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Abstract

In this paper, we study the topological spectrum of weighted Birkhoff averages over aperiodic and irreducible subshifts of finite type. We show that for a uniformly continuous family of potentials, the spectrum is continuous and concave over its domain. In case of typical weights with respect to some ergodic quasi-Bernoulli measure, we determine the spectrum. Moreover, in case of full shift and under the assumption that the potentials depend only on the first coordinate, we show that our result is applicable for regular weights, like M\"obius sequence.

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Balázs Bárány, Michał Rams, Ruxi Shi. 2020-06-11. On the multifractal spectrum of weighted Birkhoff averages. https://arxiv.org/abs/2006.06774

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