Hyperbolic measure of maximal entropy for generic rational maps of P^k

Details Hyperbolic measure of maximal entropy for generic rational maps of P^k Hyperbolic measure of maximal entropy for generic rational maps of P^k

2011-12-02

arxiv.org/abs/1112.0501v1

Mathematics

Complex Variables

32 pages

Scientific paper

Let f be a dominant rational map of P^k such that there exists s lambda_l(f) for all l. Under mild hypotheses, we show that, for A outside a pluripolar set of the group of automorphisms of P^k, the map f o A admits a hyperbolic measure of maximal entropy log(lambda_s(f)) with explicit bounds on the Lyapunov exponents. In particular, the result is true for polynomial maps hence for the homogeneous extension of f to P^{k+1}. This provides many examples where non uniform hyperbolic dynamics is established. One of the key tools is to approximate the graph of a meromorphic function by a smooth positive closed current. This allows us to do all the computations in a smooth setting, using super-potentials theory to pass to the limit.

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