Hausdorff dimension of the set of points on divergent trajectories of a homogeneous flow on a product space
Abstract
In this paper we compute the Hausdorff dimension of the set Dn of points on divergent trajectories of the homogeneous flow induced by a certain one-parameter subgroup of G=SL(2,R) acting by left multiplication on the product space Gn/Gamman, where Gamma=SL(2,Z). We prove that the Hausdorff dimension of Dn equals 3n-(1/2) for any n greater than one.
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