Global rigidity results for lattice actions on tori and new examples of volume-preserving actions

Global rigidity results for lattice actions on tori and new examples of volume-preserving actions
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环面晶格作用的整体刚性结果和体积保持作用的新例子

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发表时间:
1996
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通讯作者:
J. Lewis
J. Lewis
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作者:
A. Katok;J. Lewis

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SL(n,n),n≥4中的有限指数子群在n维环面上的任何作用光滑共轭于仿射作用,该环面具有有限轨道并包含分裂为直积的Anosov元.我们还构造了SL(n,n)和其他高阶格上的实解析保体积作用的第一个例子,这些格不共轭(甚至拓扑)到代数模型。
Any action of a finite index subgroup in SL(n,ℤ),n≥4 on then-dimensional torus which has a finite orbit and contains an Anosov element which splits as a direct product is smoothly conjugate to an affine action. We also construct first examples of real-analytic volume-preserving actions of SL(n,ℤ) and other higher-rank lattices on compact manifolds which are not conjugate (even topologically) to algebraic models.