Positve Entropy Geodesic Flows on Nilmanifolds

Details Positve Entropy Geodesic Flows on Nilmanifolds Positve Entropy Geodesic Flows on Nilmanifolds

2007-09-28

arxiv.org/abs/0709.4646v1

Mathematics

Dynamical Systems

1 figure, 1 table

Scientific paper

10.1088/0951-7715/21/7/002

Let T be the nilpotent group of 4 x 4 real upper triangular matrices. In this note we show that the Euler equations of certain left-invariant riemannian metrics on T have a horseshoe. We also show, with the aid of a numerical computation of a Melnikov-type integral, that the Euler equations of the sub-riemannian Carnot metric on T has a horseshoe. This sharpens an earlier result of Montgomery, Shapiro and Stolin who had shown that the equations are algebraically non-integrable.

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