2015/11/21 by Rapaport, Ariel · 1 citation
#28A80 (Secondary) #37C45 (Primary) #Dynamical Systems (math.DS) #FOS: Mathematics
paper · doi:10.48550/arxiv.1511.06893
Let μ be a self-affine measure on ℝd associated to a self-affine IFS \φλ(x) = Aλx + vλ\λ∈Λ and a probability vector p=(pλ)λ>0. Assume the strong separation condition holds. Let γ1≥...≥γd and D be the Lyapunov exponents and dimension corresponding to \Aλ\λ∈Λ and pℕ, and let G be the group generated by \Aλ\λ∈Λ. We show that if γm+1>γm=...=γd, if G acts irreducibly on the vector space of alternating m-forms, and if the Furstenberg measure μF satisfies dimHμF+D>(m+1)(d-m), then μ is exact dimensional with dimμ=D.