Abstract
We consider a class of expanding maps of the 2-torus of the form $f(x,y)=(a(x,y), b(y))$ that are C $^2$ -perturbations of linear ones. In that class we consider invariant sets $\Lambda$ possessing a simple Markov structure, and show there exist ergodic invariant measures supported on $\Lambda$ with Hausdorff dimension arbitrarily close to the Hausdorff dimension of $\Lambda$ . For f and $\Lambda$ as above we also show that the Birkhoff exceptional set has full Hausdorff dimension.
Published Version
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