Dimension of homogeneous iterated function systems with algebraic translations
arxiv(2024)
摘要
Let μ be the self-similar measure associated with a homogeneous
iterated function system Φ = {λ x + t_j }_j=1^m on R
and a probability vector (p_j)_j=1^m, where 0≠λ∈ (-1,1)
and t_j∈ R. Recently by modifying the arguments of Varjú (2019),
Rapaport and Varjú (2024) showed that if t_1,…, t_m are rational
numbers and 0<λ<1, then
μ =min{ 1, ∑_j=1^m p_jlog p_j/log |λ| }
unless Φ
has exact overlaps. In this paper, we further show that the above equality
holds in the case when t_1,…, t_m are algebraic numbers and
0<|λ|<1. This is done by adapting and extending the ideas employed in
the recent papers of Breuillard, Rapaport and Varjú.
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