# American Institute of Mathematical Sciences

January  2014, 8(1): 93-107. doi: 10.3934/jmd.2014.8.93

## Minimal yet measurable foliations

 1 Departamento de Matemática, ICMC-USP São Carlos- SP, Brazil, Brazil 2 Departamento de Matematica, ICMC-USP São Carlos, Caixa Postal 668, 13560-970 São Carlos-SP

Received  August 2013 Published  July 2014

In this paper we mainly address the problem of disintegration of Lebesgue measure along the central foliation of volume-preserving diffeomorphisms isotopic to hyperbolic automorphisms of 3-torus. We prove that atomic disintegration of the Lebesgue measure (ergodic case) along the central foliation has the peculiarity of being mono-atomic (one atom per leaf). This implies the measurability of the central foliation. As a corollary we provide open and nonempty subset of partially hyperbolic diffeomorphisms with minimal yet measurable central foliation.
Citation: Gabriel Ponce, Ali Tahzibi, Régis Varão. Minimal yet measurable foliations. Journal of Modern Dynamics, 2014, 8 (1) : 93-107. doi: 10.3934/jmd.2014.8.93
##### References:
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##### References:
 [1] A. Avila, M. Viana and A. Wilkinson, Absolute continuity, Lyapunov exponents and rigidity I: Geodesic flows,, , (2011). Google Scholar [2] A. Baraviera and C. Bonatti, Removing zero Lyapunov exponents,, Ergodic Theory and Dynamical Systems, 23 (2003), 1655. doi: 10.1017/S0143385702001773. Google Scholar [3] L. Barreira and Y. Pesin, Nonuniform Hyperbolicity. Dynamics of Systems with Nonzero Lyapunov Exponents,, Encyclopedia of Mathematics and its Applications, (2007). doi: 10.1017/CBO9781107326026. Google Scholar [4] C. Bonatti and A. Wilkinson, Transitive partially hyperbolic diffeomorphisms on 3-manifolds,, Topology, 44 (2005), 475. doi: 10.1016/j.top.2004.10.009. Google Scholar [5] M. Brin, D. Burago and D. Ivanov, On partially hyperbolic diffeomorphisms of 3-manifolds with commutative fundamental group,, in Modern Dynamical Systems and Applications, (2004), 307. Google Scholar [6] M. Brin, D. Burago and D. Ivanov, Dynamical coherence of partially hyperbolic diffeomorphisms of the 3-torus,, J. Mod. Dyn., 3 (2009), 1. doi: 10.3934/jmd.2009.3.1. Google Scholar [7] M. Einsiedler and T. Ward, Ergodic Theory with a View Towards Number Theory,, Graduate Texts in Mathematics, (2011). doi: 10.1007/978-0-85729-021-2. Google Scholar [8] J. Franks, Anosov diffeomorphisms,, in Global Analysis (Proc. Sympos. Pure Math., (1968), 61. Google Scholar [9] A. Gogolev, How typical are pathological foliations in partially hyperbolic dynamics: An example,, Israel J. Math., 187 (2012), 493. doi: 10.1007/s11856-011-0088-3. Google Scholar [10] A. Hammerlindl, Leaf conjugacies on the torus,, to appear in Ergodic Theory and Dynamical Systems, (2009). Google Scholar [11] A. Hammerlindl, Leaf Conjugacies on the Torus,, Ph.D. Thesis, (2009). Google Scholar [12] A. Hammerlindl and R. Potrie, Pointwise partial hyperbolicity in 3-dimensional nilmanifolds,, preprint, (2013). Google Scholar [13] A. Hammerlindl and R. Ures, Ergodicity and partial hyperbolicity on the 3-torus,, Commun. Contemp. Math., (2013). doi: 10.1142/S0219199713500387. Google Scholar [14] M. Hirayama and Y. Pesin, Non-absolutely continuous foliations,, Israel J. Math., 160 (2007), 173. doi: 10.1007/s11856-007-0060-4. Google Scholar [15] M. Hirsch, C. Pugh and M. Shub, Invariant Manifolds,, Lecture Notes in Math., (1977). Google Scholar [16] F. Ledrappier and L.-S. Young, The metric entropy of diffeomorphisms. I. Characterization of measures satisfying Pesin's entropy formula,, Ann. of Math. (2), 122 (1985), 509. doi: 10.2307/1971328. Google Scholar [17] G. Ponce and A. Tahzibi, Central Lyapunov exponents of partially hyperbolic diffeomorphisms on $\mathbbT^3$,, to appear in Proceedings of AMS, (2013). Google Scholar [18] V. A. Rohlin, Lectures on the entropy theory of transformations with invariant measure,, Uspehi Mat. Nauk, 22 (1967), 3. Google Scholar [19] D. Ruelle and A. Wilkinson, Absolutely singular dynamical foliations,, Comm. Math. Phys., 219 (2001), 481. doi: 10.1007/s002200100420. Google Scholar [20] R. Saghin and Z. Xia, Geometric expansion, Lyapunov exponents and foliations,, Ann. Inst. H. Poincaré Anal. Non Linéaire, 26 (2009), 689. doi: 10.1016/j.anihpc.2008.07.001. Google Scholar [21] M. Shub and A. Wilkinson, Pathological foliations and removable zero exponents,, Invent. Math., 139 (2000), 495. doi: 10.1007/s002229900035. Google Scholar [22] D. Sullivan, A counterexample to the periodic orbit conjecture,, Inst. Hautes Études Sci. Publ. Math., 46 (1976), 5. Google Scholar [23] R. Ures, Intrinsic ergodicity of partially hyperbolic diffeomorphisms with a hyperbolic linear part,, Proc. Amer. Math. Soc., 140 (2012), 1973. doi: 10.1090/S0002-9939-2011-11040-2. Google Scholar [24] R. Varão, Center foliation: Absolute continuity, disintegration and rigidity,, to appear in Ergodic Theory and Dynamical Systems, (2014). Google Scholar [25] Y. Pesin, Characteristic Lyapunov exponents, and smooth ergodic theory,, Russ. Math. Surv., 32 (1977), 55. doi: 10.1070/RM1977v032n04ABEH001639. Google Scholar
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