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arXiv 1704.03036math.DS
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高维环面上遍历平移控制分裂的拓扑障碍

Topological obstructions to dominated splitting for ergodic translations on the higher dimensional torus

Pedro Duarte, Silvius Klein

摘要:

考虑高维环面上的解析拟周期余圈空间。我们提供的例子的上循环与非平凡的李雅普诺夫谱,其同伦类不包含任何上循环满足支配分裂性质。这表明A.阿维拉岛Jitomirskaya和C.在更高维度的环面设置中,Sadel并不成立。

英文摘要:

Consider the space of analytic, quasi-periodic cocycles on the higher dimensional torus. We provide examples of cocycles with nontrivial Lyapunov spectrum, whose homotopy classes do not contain any cocycles satisfying the dominated splitting property. This shows that the main result in the recent work "Complex one-frequency cocycles" by A. Ávila, S. Jitomirskaya and C. Sadel does not hold in the higher dimensional torus setting.

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