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Translates of homogeneous measures associated with observable subgroups on some homogeneous spaces
Published online by Cambridge University Press: 22 December 2021
Abstract
In the present article, we study the following problem. Let $\boldsymbol {G}$ be a linear algebraic group over
$\mathbb {Q}$, let
$\Gamma$ be an arithmetic lattice, and let
$\boldsymbol {H}$ be an observable
$\mathbb {Q}$-subgroup. There is a
$H$-invariant measure
$\mu _H$ supported on the closed submanifold
$H\Gamma /\Gamma$. Given a sequence
$(g_n)$ in
$G$, we study the limiting behavior of
$(g_n)_*\mu _H$ under the weak-
$*$ topology. In the non-divergent case, we give a rather complete classification. We further supplement this by giving a criterion of non-divergence and prove non-divergence for arbitrary sequence
$(g_n)$ for certain large
$\boldsymbol {H}$. We also discuss some examples and applications of our result. This work can be viewed as a natural extension of the work of Eskin–Mozes–Shah and Shapira–Zheng.
MSC classification
- Type
- Research Article
- Information
- Copyright
- © 2021 The Author(s). The publishing rights in this article are licensed to Foundation Compositio Mathematica under an exclusive licence
References
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