Lyapunov exponents and rigidity of Anosov automorphisms and skew products
Lyapunov exponents and rigidity of Anosov automorphisms and skew products
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DOI:
10.1016/j.aim.2019.106764
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发表时间:
2018-02
影响因子:
1.7
通讯作者:
Radu Saghin;Jiagang Yang
中科院分区:
文献类型:
--
作者:
Radu Saghin;Jiagang Yang
In this paper we obtain local rigidity results for linear Anosov diffeomorphisms in terms of Lyapunov exponents. More specifically, we show that given an irreducible linear hyperbolic automorphism L with simple real eigenvalues with distinct absolute values, any small perturbation preserving the volume and with the same Lyapunov exponents is smoothly conjugate to L. We also obtain rigidity results for skew products over Anosov diffeomorphisms. Given a volume preserving partially hyperbolic skew product diffeomorphism f 0 over an Anosov automorphism of the 2-torus, we show that for any volume preserving perturbation f of f 0 with the same average stable and unstable Lyapunov exponents, the center foliation is smooth.