Dynamics done with your bare hands
Subtitle: lecture notes by Diana Davis, Bryce Weaver, Roland K.W. Roeder, Pablo Lessa
By: Françoise Dal'Bo, François Ledrappier, Amie Wilkinson, editors
Contributors: European Mathematical Society
Series: EMS series of lectures in mathematics; EMS series of lectures in mathematics
Publisher: European Mathematical Society Publishing House
Published: 2016
Place of publication: Zürich, Switzerland
Language: eng
Number of pages: 204
ISBN-13: 9783037191682
Subjects: Differentiable dynamical systems; Dynamics; Dynamical systems and ergodic theory
Description: This book arose from 4 lectures given at the Undergraduate Summer School of the Thematic Program Dynamics and Boundaries held at the University of Notre Dame. It is intended to introduce (under)graduate students to the field of dynamical systems by emphasizing elementary examples, exercises and bare hands constructions. The lecture of Diana Davis is devoted to billiard flows on polygons, a simple-sounding class of continuous time dynamical system for which many problems remain open. Bryce Weaver focuses on the dynamics of a 2x2 matrix acting on the flat torus. This example introduced by Vladimir Arnold illustrates the wide class of uniformly hyperbolic dynamical systems, including the geodesic flow for negatively curved, compact manifolds. Roland Roeder considers a dynamical system on the complex plane governed by a quadratic map with a complex parameter. These maps exhibit complicated dynamics related to the Mandelbrot set defined as the set of parameters for which the orbit remains bounded. Pablo Lessa deals with a type of non-deterministic dynamical system: a simple walk on an infinite graph, obtained by starting at a vertex and choosing a random neighbor at each step. The central question concerns the recurrence property. When the graph is a Cayley graph of a group, the behavior of the walk is deeply related to algebraic properties of the group.
Notes: In European Mathematical Society.

Includes bibliographical references and index.
Table of contents: title: Lines in positive genus: An introduction to flat surfaces  -- Diana Davis; title: Introduction to complicated behavior and periodic orbits  -- Bryce Weaver; title: Around the boundary of complex dynamics  -- Roland K.W. Roeder; title: Recurrence vs transience: An introduction to random walks -- Pablo Lessa.