$C^{1}$-openness of non-uniform hyperbolic diffeomorphisms with bounded $C^{2}$-norm. (November 2020)

• Record Type: Journal Article
• Authors: LIANG, CHAO; MARIN, KARINA; YANG, JIAGANG
• Is Part Of: Ergodic theory and dynamical systems. Volume 40:Number 11(2020)
• Page Start: 3078
• Page End: 3104
• Publication Date: 2020-11
• Subjects: 37D25, -- 37D30; non-uniform hyperbolicity, -- partial hyperbolic diffeomorphisms, -- Lyapunov exponents; Ergodic theory -- Periodicals; Differentiable dynamical systems -- Periodicals; 515.42
• DOI: 10.1017/etds.2019.36
• Languages: English
• ISSNs: 0143-3857

Abstract

Abstract : We study the $C^{1}$ -topological properties of the subset of non-uniform hyperbolic diffeomorphisms in a certain class of $C^{2}$ partially hyperbolic symplectic systems which have bounded $C^{2}$ distance to the identity. In this set, we prove the stability of non-uniform hyperbolicity as a function of the diffeomorphism and the measure, and the existence of an open and dense subset of continuity points for the center Lyapunov exponents. These results are generalized to the volume-preserving context.