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We prove existence of asymptotic entropy of random walks on regular languages over a finite alphabet and we give formulas for it. Furthermore, we show that the entropy varies real-analytically in terms of probability measures of constant…

Probability · Mathematics 2015-03-11 Lorenz A. Gilch

Let $G=\mathop{A\ast B}\limits_C$ be an amalgamated product of finite rank free groups $A$, $B$ and $C$. We introduce atomic measures and corresponding asymptotic densities on a set of normal forms of elements in $G$. We also define two…

Group Theory · Mathematics 2011-07-21 Elizaveta Frenkel , Alexei G. Myasnikov , Vladimir N. Remeslennikov

We study the asymptotic behavior of a random walk on the locally free group, and disprove a conjecture concerning the expected number of removeable generators.

Probability · Mathematics 2007-05-23 J. Ben Hough

For discrete measured groupoids preserving a probability measure we introduce a notion of sofic dimension that measures the asymptotic growth of the number of sofic approximations on larger and larger finite sets. In the case of groups we…

Dynamical Systems · Mathematics 2012-11-13 Ken Dykema , David Kerr , Mikael Pichot

Random walks on a group $G$ model many natural phenomena. A random walk is defined by a probability measure $p$ on $G$. We are interested in asymptotic properties of the random walks and in particular in the linear drift and the asymptotic…

Probability · Mathematics 2015-12-14 Lorenz A. Gilch , François Ledrappier

Suppose we are given the free product V of a finite family of finite or countable sets. We consider a transient random walk on the free product arising naturally from a convex combination of random walks on the free factors. We prove the…

Probability · Mathematics 2015-03-17 Lorenz A. Gilch

In this paper we study asymptotic behavior of regular subsets in a free group F of finite rank, compare their sizes at infinity, and develop techniques to compute the probabilities of sets relative to distributions on F that come naturally…

Group Theory · Mathematics 2009-06-17 Elizaveta Frenkel , Alexei G. Myasnikov , Vladimir N. Remeslennikov

We present a new approach to the proof of ergodic theorems for actions of free groups based on geometric covering and asymptotic invariance arguments. Our approach can be viewed as a direct generalization of the classical geometric covering…

Dynamical Systems · Mathematics 2010-09-03 Lewis Bowen , Amos Nevo

Given a finite-range random walk on a finitely generated free group , what is the asymptotic behaviour, as the number of steps goes to infinity, of the sequence of probabilities that the random walk is at a given element of the group? In…

Probability · Mathematics 2025-07-22 Guillaume Chevalier

We introduce asymptotic R\'enyi entropies as a parameterized family of invariants for random walks on groups. These invariants interpolate between various well-studied properties of the random walk, including the growth rate of the group,…

Probability · Mathematics 2024-06-11 Kimberly Golubeva , Minghao Pan , Omer Tamuz

The entropy of the random walk on the discrete contable group could be used for comparison of the system of the generators. Fundamental inequality between growth, entropy and escape gives the possibility to define "the best" system of the…

Probability · Mathematics 2014-11-18 Anatoly M. Vershik

We derive an asymptotic expansion for the subgroup of arbitrary Fuchsian groups and some other classes of large groups. Moreover, the main conjecture for Random Walks on symmetric groups is established in full generality. Both problems…

Group Theory · Mathematics 2007-05-23 Thomas W. Mueller , Jan-Christoph Schlage-Puchta

In this paper we investigate the special automata over finite rank free groups and estimate asymptotic characteristics of sets they accept. We show how one can decompose an arbitrary regular subset of a finite rank free group into disjoint…

Group Theory · Mathematics 2016-03-10 Elizaveta Frenkel , Vladimir N. Remeslennikov

We generalize the notion of isoperimetric profiles of finitely generated groups to their actions by measuring the boundary of finite subgraphings of the orbit graphing. We prove that like the classical isoperimetric profiles for groups,…

Dynamical Systems · Mathematics 2023-10-05 Zihan Xia

A variety of behaviors of entropy functions of random walks on finitely generated groups is presented, showing that for any $\frac{1}{2}\leq \alpha\leq\beta\leq1$, there is a group $\Gamma$ with measure $\mu$ equidistributed on a finite…

Group Theory · Mathematics 2013-12-17 Jérémie Brieussel

Let G be a free product of a finite family of finite groups, with the set of generators being formed by the union of the finite groups. We consider a transient nearest-neighbour random walk on G. We give a new proof of the fact that the…

Probability · Mathematics 2007-05-23 Jean Mairesse , Frédéric Mathéus

In repeated Measure Designs with multiple groups, the primary purpose is to compare different groups in various aspects. For several reasons, the number of measurements and therefore the dimension of the observation vectors can depend on…

Statistics Theory · Mathematics 2022-07-20 Paavo Sattler , Markus Pauly

We provide new examples of the asymptotic counting for the number of subsets on groups of given size which are free of certain configurations. These examples include sets without solutions to equations in non-abelian groups, and linear…

Combinatorics · Mathematics 2016-02-08 Juanjo Rué , Oriol Serra , Lluís Vena

We deal with finitely additive measures defined on all subsets of natural numbers which extend the asymptotic density (density measures). We consider a class of density measures which are constructed from free ultrafilters on natural…

Number Theory · Mathematics 2016-09-02 Ryoichi Kunisada

In this preprint we derive explicit estimates for the asymptotics of the first-passage function for a specific class of random walks on free groups and use them to prove the singularity of the hitting measure for a similarly defined class…

Probability · Mathematics 2023-01-24 Petr Kosenko
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