Analysis · Oct 6, 2026

The entropy-rate dimension formula for self-similar measures

For every self-similar measure on the line generated by finitely many contracting similarities, proves dim⁡Hμ=min⁡{1,hRW/χ}\dim_{\mathrm H}\mu=\min\{1,h_{\mathrm{RW}}/\chi\}, where hRWh_{\mathrm{RW}} is the entropy rate of random composed maps and χ the average logarithmic contraction. This resolves the entropy-rate dimension conjecture without a separation assumption, allowing exact overlaps and unequal contraction ratios.

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