Abstract
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.
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This work was partially supported by NSF grant DMS9017995.
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Katok, A., Lewis, J. Global rigidity results for lattice actions on tori and new examples of volume-preserving actions. Israel J. Math. 93, 253–280 (1996). https://doi.org/10.1007/BF02761106
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DOI: https://doi.org/10.1007/BF02761106