Geodesic
Generalized Lyapunov theorem on Mal'tsev manifolds
Sbornik. Mathematics, Tome 23 (1974) no. 2, pp. 155-168 Cet article a éte moissonné depuis la source Math-Net.Ru

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The problem is studied of the extendability of a homomorphism $\mu\colon\Gamma\to G$, where $\Gamma$ is a lattice in a simply-connected nilpotent Lie group $N$, and $G$ is a linear algebraic group, to a homomorphism $\widetilde\mu\colon N\to G$ such that $\widetilde\mu|_\Gamma=\mu$. The case $\Gamma=\mathbf Z^n$ is considered in detail. The results obtained are applied to the study of reducibility of completely integrable equations on $N/\Gamma$. Bibliography: 12 titles. 
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     title = {Generalized {Lyapunov} theorem on {Mal'tsev} manifolds},
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V. V. Gorbatsevich. Generalized Lyapunov theorem on Mal'tsev manifolds. Sbornik. Mathematics, Tome 23 (1974) no. 2, pp. 155-168. http://geodesic.mathdoc.fr/item/SM_1974_23_2_a0/

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