Local rigidity of Lyapunov spectrum for toral automorphisms
Local rigidity of Lyapunov spectrum for toral automorphisms
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环自同构的李亚普诺夫谱的局部刚性
DOI:
10.1007/s11856-020-2028-6
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发表时间:
2020
影响因子:
1
通讯作者:
Sadovskaya, Victoria
中科院分区:
文献类型:
--
作者:
Gogolev, Andrey;Kalinin, Boris;Sadovskaya, Victoria
We study the regularity of the conjugacy between an Anosov automorphismLof a torus and its small perturbation. We assume thatLhas no more than two eigenvalues of the same modulus and thatL4is irreducible over ℚ. We consider a volume-preservingC1-small perturbationfofL. We show that if Lyapunov exponents offwith respect to the volume are the same as Lyapunov exponents ofL, thenfisC1+Hölderconjugate toL. Further, we establish a similar result for irreducible partially hyperbolic automorphisms with two-dimensional center bundle.
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