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We prove a quantitative equidistribution statement for adelic homogeneous subsets whose stabilizer is maximal and semisimple. Fixing the ambient space, the statement is uniform in all parameters. We explain how this implies certain…

Number Theory · Mathematics 2019-06-27 Manfred Einsiedler , Gregory Margulis , Amir Mohammadi , Akshay Venkatesh

Recently Mohammadi and Salehi-Golsefidy gave necessary and sufficient conditions under which certain translates of homogeneous measures converge, and they determined the limiting measures in the cases of convergence. The class of measures…

Dynamical Systems · Mathematics 2016-04-18 Kathryn Dabbs , Michael Kelly , Han Li

In this note, we consider the orbits $\{pu(n^{1+\gamma})|n\in\mathbb N\}$ in $\Gamma\backslash\text{PSL}(2,\mathbb R)$, where $\Gamma$ is a non-uniform lattice in $\text{PSL}(2,\mathbb R)$ and $u(t)$ is the standard unipotent group in…

Dynamical Systems · Mathematics 2019-08-13 Cheng Zheng

We show that equidistribution of irrational orbits on the unit circle implies Furstenberg's conjecture.

Dynamical Systems · Mathematics 2015-06-09 Huichi Huang

We prove pointwise convergence for the semi-radial averages on $G=SL_2(\mathbb{R})$ given by $\int_t^{t+1} m_K\ast \delta_{a_{s}}ds$ (and similar variants), acting on $K$-finite $L^p$-functions in a probability-measure-preserving action of…

Dynamical Systems · Mathematics 2017-08-15 Amos Nevo

Let $M$ be a finite volume hyperbolic manifold, we show the equidistribution in $M$ of the equidistant hypersurfaces to a finite volume totally geodesic submanifold $C$. We prove a precise asymptotic on the number of geodesic arcs of…

Dynamical Systems · Mathematics 2025-10-30 Jouni Parkkonen , Frédéric Paulin

We prove an effective version of a result due to Einsiedler, Mozes, Shah and Shapira on the asymptotic distribution of primitive rational points on expanding closed horospheres in the space of lattices. Key ingredients of our proof include…

Number Theory · Mathematics 2023-07-18 Daniel El-Baz , Min Lee , Andreas Strömbergsson

We will prove an S-arithmetic version of a theorem of Dani-Margulis on the convergence of ergodic averages of a given bounded continuous function, when the initial point is outside certain compact subsets of the singular set associated to…

Dynamical Systems · Mathematics 2016-05-10 Keivan Mallahi-Karai

Let $G$ be a semisimple Lie group without compact factor and $\Gamma < G$ a torsion-free, cocompact, irreducible lattice. According to Selberg, periodic orbits of regular Weyl chamber flows live on maximal flat periodic tori of the space of…

Dynamical Systems · Mathematics 2022-02-18 Nguyen-Thi Dang , Jialun Li

We study periodic torus orbits on spaces of lattices. Using the action of the group of adelic points of the underlying tori, we define a natural equivalence relation on these orbits, and show that the equivalence classes become uniformly…

Number Theory · Mathematics 2014-11-18 Manfred Einsiedler , Elon Lindenstrauss , Philippe Michel , Akshay Venkatesh

We study distribution of orbits sampled at polynomial times for uniquely ergodic topological dynamical systems $(X, T)$. First, we prove that if there exists an increasing sequence $(q_n)$ for which the rigidity condition \[…

Dynamical Systems · Mathematics 2025-01-13 Kosma Kasprzak

We prove an effective version of a result obtained recently by Kleinbock and Weiss on equidistribution of expanding translates of orbits of horospherical subgroups in the space of lattices.

Dynamical Systems · Mathematics 2009-09-30 D. Y. Kleinbock , G. A. Margulis

We give the first fully polynomial-time algorithm for learning halfspaces with respect to the uniform distribution on the hypercube in the presence of contamination, where an adversary may corrupt some fraction of examples and labels…

Data Structures and Algorithms · Computer Science 2025-11-11 Gautam Chandrasekaran , Adam R. Klivans , Konstantinos Stavropoulos , Arsen Vasilyan

H. Weyl proved in \cite{Weyl} that integer evaluations of polynomials are equidistributed mod 1 whenever at least one of the non-free coefficients is irrational. We use Weyl's result to prove a higher dimensional analogue of this fact.…

Number Theory · Mathematics 2023-07-07 Yuval Yifrach

We describe new arithmetic invariants for pairs of torus orbits on groups isogenous to an inner form of $\mathbf{PGL}_n$ over a number field. These invariants are constructed by studying the double quotient of a linear algebraic group by a…

Number Theory · Mathematics 2019-09-18 Ilya Khayutin

This paper addresses the topic of equidistribution and recurrence for polynomial sequences over function fields. The main focus is to note and correct two small errors in [V. Bergelson and A. Leibman, A Weyl-type equidistribution theorem in…

Number Theory · Mathematics 2026-03-24 Ethan Ackelsberg , Vitaly Bergelson

We study equidistribution of solutions of word equations of the form w(x,y)=g in the family of finite groups SL(2,q). We provide criteria for equidistribution in terms of the trace polynomial of w. This allows us to get an explicit…

Group Theory · Mathematics 2013-02-18 Tatiana Bandman , Boris Kunyavskii

Let \Gamma be a lattice in G=SL(n,R) and X=G/S a homogeneous space of G, where S is a closed subgroup of G which contains a real algebraic subgroup H such that G/H is compact. We establish uniform distribution of orbits of \Gamma in X…

Dynamical Systems · Mathematics 2007-05-23 Alexander Gorodnik

We study a variant of the equidistribution of mass conjecture on the sphere posed by B\"ocherer, Sarnak, and Schulze-Pillot: quantum unique ergodicity in shrinking sets. Conditionally on the generalized Lindel\"of hypothesis, we show that…

Number Theory · Mathematics 2026-03-27 Maximiliano Sanchez Garza

In the moduli space of degree d polynomials, we prove the equidistribution of postcritically finite polynomials toward the bifurcation measure. More precisely, using complex analytic arguments and pluripotential theory, we prove the…

Dynamical Systems · Mathematics 2016-12-05 Thomas Gauthier , Gabriel Vigny