Geodesic
Conservative Homoclinic Bifurcations and Some Applications
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Singularities and applications, Tome 267 (2009), pp. 82-96

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We study generic unfoldings of homoclinic tangencies of two-dimensional area-preserving diffeomorphisms (conservative Newhouse phenomena) and show that they give rise to invariant hyperbolic sets of arbitrarily large Hausdorff dimension. As applications, we discuss the size of the stochastic layer of a standard map and the Hausdorff dimension of invariant hyperbolic sets for certain restricted three-body problems. We avoid involved technical details and only concentrate on the ideas of the proof of the presented results. 
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     author = {A. Gorodetski and V. Kaloshin},
     title = {Conservative {Homoclinic} {Bifurcations} and {Some} {Applications}},
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     year = {2009},
     language = {en},
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A. Gorodetski; V. Kaloshin. Conservative Homoclinic Bifurcations and Some Applications. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Singularities and applications, Tome 267 (2009), pp. 82-96. http://geodesic.mathdoc.fr/item/TM_2009_267_a5/