The two-dimensional density of Bernoulli Convolutions
Abstract
Bernoulli convolutions form a one-parameter family of self-similar measures on the unit interval. We suggest to study their two-dimensional density which has an intricate combinatorial structure. Visualizing this structure we discuss results of Erd\"os, J\'oo, Komornik, Sidorov, de Vries, Jordan, Shmerkin and Solomyak, Feng and Wang. We emphasize the r\ole of finite orbits of associated multivalued maps and mention a few new properties and examples.
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