Sub-actions for Anosov flows
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2005Tipo
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Abstract
Let (M, Øt }) be a smooth (not necessarily transitive) Anosov flow without fixed points generated by a vector field X(x) = (d/dt)|t=0Øt (x) on a compact manifold M. Let A : M → R be a globally Holder function defined on M. Assume that ∫0T 0 A ◦ Øt (x) dt ≥ 0 for any periodic orbit Øt (x)}t=T t=0 of period T . Then there exists a H¨older function V : M →R, called a sub-action, smooth in the flow direction, such that A(x) ≥ LXV (x), for all x є M (where LXV = (d/dt)|t=0 V ◦Øt(x) denotes the Lie d ...
Let (M, Øt }) be a smooth (not necessarily transitive) Anosov flow without fixed points generated by a vector field X(x) = (d/dt)|t=0Øt (x) on a compact manifold M. Let A : M → R be a globally Holder function defined on M. Assume that ∫0T 0 A ◦ Øt (x) dt ≥ 0 for any periodic orbit Øt (x)}t=T t=0 of period T . Then there exists a H¨older function V : M →R, called a sub-action, smooth in the flow direction, such that A(x) ≥ LXV (x), for all x є M (where LXV = (d/dt)|t=0 V ◦Øt(x) denotes the Lie derivative of V ). If A is Cr then LXV is Cr on any local center-stable manifold. ...
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Ergodic theory and dynamical systems. Cambridge. Vol. 25, no. 2 (Apr. 2005), p. 605-628.
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