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Dynamical systems on measure spaces, invariant measures, ergodic averages, mixing properties.

6 votes
1 answer
606 views

Non uniquely ergodic interval exchange transformations

Consider an interval exchange transformation that is, a bijective piecewise continuous map $[0,1] \rightarrow [0,1] $ whose restriction to its continuity intervals are translations. Assume that it is …
Selim G's user avatar
  • 2,696
11 votes
2 answers
709 views

Minimal, uniquely ergodic but not Lebesgue-ergodic?

So here's my question: Does there exist a minimal diffeomorphism of class at least $\mathcal{C^2}$ of a compact manifold X which is minimal uniquely ergodic with unique probability measure $\mu$ n …
Selim G's user avatar
  • 2,696
13 votes
2 answers
651 views

Closure of the orbits of the $SL(2,\mathbb{Z})$-action on $\mathbb{R}^2$

I'm coming with a very basic question for which I can't find an answer. Please forgive me if I didn't search efficiently enough. What can the closure of an orbit of an element $X$ of $\mathbb{R}^2$ u …
Selim G's user avatar
  • 2,696