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We show that the sets of weighted badly approximable vectors in $\Bbb R^n$ are winning sets of certain games, which are modifications of $(\alpha,\beta)$-games introduced by W. Schmidt in 1966. The latter winning property is stable with…

Number Theory · Mathematics 2011-06-10 Dmitry Kleinbock , Barak Weiss

We consider Schmidt's game on the space of compact subsets of a given metric space equipped with the Hausdorff metric, and the space of continuous functions equipped with the supremum norm. We are interested in determining the generic…

Metric Geometry · Mathematics 2021-03-26 Ábel Farkas , Jonathan M. Fraser , Erez Nesharim , David Simmons

We prove that the set of bounded geodesics in Teichmuller space are a winning set for Schmidt's game. This is a notion of largeness in a metric space that can apply to measure 0 and meager sets. We prove analogous closely related results on…

Dynamical Systems · Mathematics 2013-12-16 Jonathan Chaika , Yitwah Cheung , Howard Masur

Schmidt games and the Cantor winning property give alternative notions of largeness, similar to the more standard notions of measure and category. Being intuitive, flexible, and applicable to recent research made them an active object of…

Number Theory · Mathematics 2024-12-11 Dzmitry Badziahin , Stephen Harrap , Erez Nesharim , David Simmons

We construct (\alpha ,\beta) and \alpha -winning sets in the sense of Schmidt's game, played on the support of certain measures (very friendly and awfully friendly measures) and show how to derive the Hausdorff dimension for some. In…

Number Theory · Mathematics 2010-11-11 Lior Fishman

Let T be a C^2-expanding self-map of a compact, connected, smooth, Riemannian manifold M. We correct a minor gap in the proof of a theorem from the literature: the set of points whose forward orbits are nondense has full Hausdorff…

Dynamical Systems · Mathematics 2009-11-13 Jimmy Tseng

Schmidt's game is a powerful tool for studying properties of certain sets which arise in Diophantine approximation theory, number theory, and dynamics. Recently, many new results have been proven using this game. In this paper we address…

Logic · Mathematics 2019-02-20 Lior Fishman , Tue Ly , David S. Simmons

Let $f: M \to M$ be a partially hyperbolic diffeomorphism with conformality on unstable manifolds. Consider a set of points with nondense forward orbit: $E(f, y) := \{ z\in M: y\notin \overline{\{f^k(z), k \in \mathbb{N}\}}\}$ for some $y…

Dynamical Systems · Mathematics 2013-11-22 Weisheng Wu

The set of badly approximable numbers, Bad, is known to be winning for Schmidt's game and hence has full Hausdorff dimension. It is also known that the set of inhomogeneously badly approximable numbers has full dimension. We prove that the…

Number Theory · Mathematics 2024-12-03 Dorsa Hatefi , David Simmons

In this paper we study the classical Schmidt game on two families of sets: one related to frequencies of digits in base-$2$ expansions, and one connected to the set of the badly approximable numbers. Namely, we describe some nontrivial…

Number Theory · Mathematics 2025-11-17 Vasiliy Neckrasov , Eric Zhan

Let $f: M \to M$ be a $C^{1+\theta}$-partially hyperbolic diffeomorphism. We introduce a type of modified Schmidt games which is induced by $f$ and played on any unstable manifold. Utilizing it we generalize some results of \cite{Wu} as…

Dynamical Systems · Mathematics 2015-04-14 Weisheng Wu

We prove that for any pair $(s,t)$ of nonnegative numbers with $s+t=1$, the set of two-dimensional $(s,t)$-badly approximable vectors is winning for Schmidt's game. As a consequence, we give a direct proof of Schmidt's conjecture using his…

Number Theory · Mathematics 2016-02-10 Jinpeng An

In this paper, we manage to apply Schmidt games to certain non-algebraic dynamical systems. More precisely, we show that the set of points with non-dense forward orbit under a $C^2$-Anosov diffeomorphism with conformality on unstable…

Dynamical Systems · Mathematics 2015-12-29 Weisheng Wu

Let $K$ be a number field, let $S$ be the set of all normalized, non-conjugate Archimedean valuations of $K$, and let $K_{S} = \prod_{v \in S} K_v$ be the Minkowski space associated with $K$. We strengthen recent results of…

Number Theory · Mathematics 2015-08-11 Dmitry Kleinbock , Tue Ly

Schmidt's game, and other similar intersection games have played an important role in recent years in applications to number theory, dynamics, and Diophantine approximation theory. These games are real games, that is, games in which the…

Logic · Mathematics 2017-12-05 Logan Crone , Lior Fishman , Stephen Jackson

We present a new variant of the potential game and show that certain compact subsets of $\R^n$, including a large class of self-affine sets, are winning in our game. We prove that sets with sufficiently strong winning conditions are…

Dynamical Systems · Mathematics 2025-08-18 Richard A. Howat , Andrew Mitchell , Tony Samuel

While many types of non-measurable sets are never $(\alpha, \beta)$-winning in the sense of Schmidt's game, we show that this is not the case for certain Vitali sets. Our main theorems show that for certain values of $\alpha, \beta$ one can…

Logic · Mathematics 2026-01-05 James Atchley , Lior Fishman , Stephen Jackson , Daozheng Liu , Emily Yao

We show that points on $C^{1}$ curves which are badly approximable by rationals in a number field form a winning set in the sense of W. M. Schmidt. As a consequence, we obtain a number field version of Schmidt's conjecture.

Dynamical Systems · Mathematics 2019-02-20 Manfred Einsiedler , Anish Ghosh , Beverly Lytle

For any i,j>0 with i+j =1, let Bad(i,j) denote the set of points (x,y) \in R^2 such that max \{ ||qx||^{1/i}, \, ||qy||^{1/j} \} > c/q for some positive constant c = c(x,y) and all q in N. We show that \Bad(i,j) \cap C is winning in the…

Number Theory · Mathematics 2014-09-02 Jinpeng An , Victor Beresnevich , Sanju Velani

A badly approximable system of affine forms is determined by a matrix and a vector. We show Kleinbock's conjecture for badly approximable systems of affine forms: for any fixed vector, the set of badly approximable systems of affine forms…

Dynamical Systems · Mathematics 2009-12-30 Manfred Einsiedler , Jimmy Tseng
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