Ergodic theory and the duality principle on homogeneous spaces |
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Authors: | Alexander Gorodnik Amos Nevo |
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Affiliation: | 1. School of Mathematics, University of Bristol, Bristol, UK 2. Department of Mathematics, Technion, Haifa, Israel
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Abstract: | We prove mean and pointwise ergodic theorems for the action of a lattice subgroup in a connected algebraic Lie group on infinite volume homogeneous algebraic varieties. Under suitable necessary conditions, our results are quantitative, namely we establish rates of convergence in the mean and pointwise ergodic theorems, which can be estimated explicitly. Our results give a precise and in most cases optimal quantitative form to the duality principle governing dynamics on homogeneous spaces. We illustrate their scope in a variety of equidistribution problems. |
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