Furstenberg's Times 2, Times 3 Conjecture (a Short Survey)
arXiv:2110.05989
Abstract
The following is a concise exposition of the conjecture and three of its proofs for the case of positive entropy by D. Rudolph [23] , B. Host [15] and W. Parry [22]. A simpler theorem of R. Lyons [20] - preceding them - is also presented and proved. This is a survey, no new results are introduced.