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arXiv · 1503.01033

On the sharp regularity for arbitrary actions of nilpotent groups on the interval: the case of N_4

E. Jorquera·A. Navas·C. Rivas
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Abstract

We determine the largest {\alpha} for which the nilpotent group of 4-by-4 triangular matrices with integer coefficients and 1 in the diagonal embeds into the group of C1+{\alpha} diffeomorphism of the closed interval.

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E. Jorquera, A. Navas, C. Rivas. 2015-03-03. On the sharp regularity for arbitrary actions of nilpotent groups on the interval: the case of N_4. https://doi.org/10.1017/etds.2016.38

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