Equidistribution of expanding translates of curves and Dirichlet's theorem on Diophantine approximation

Details Equidistribution of expanding translates of curves and Dirichlet's theorem on Diophantine approximation Equidistribution of expanding translates of curves and Dirichlet's theorem on Diophantine approximation

2008-02-22

arxiv.org/abs/0802.3278v1

Mathematics

Number Theory

26 pages

Scientific paper

We show that for almost all points on any analytic curve on R^{k} which is not contained in a proper affine subspace, the Dirichlet's theorem on simultaneous approximation, as well as its dual result for simultaneous approximation of linear forms, cannot be improved. The result is obtained by proving asymptotic equidistribution of evolution of a curve on a strongly unstable leaf under certain partially hyperbolic flow on the space of unimodular lattices in R^{k+1}. The proof involves ergodic properties of unipotent flows on homogeneous spaces.

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