(AD)
Bounded remainder sets for a dynamical system are sets for which the
Birkhoff averages of return times differ from the expected values by
at most a constant amount. These sets are rare and important objects
which have been studied, especially in the context of Diophantine
approximation, for over 100 years. In the last few years, there have
been a number of results which have culminated in explicit
constructions of bounded remainder sets for toral rotations in any
dimension, of all possible allowable volumes. In this talk, we are
going to give a survey of these results, the recent constructions of
bounded remainder sets for rotations on the adelic torus by Alan
Haynes, Joanna Furno and Henna Koivusalo and finally give a brief
description of the construction of bounded remainder sets for
rotations on the adelic torus in any dimension. Our results combine
ideas from harmonic analysis, dynamical systems, and the theory of
mathematical quasicrystals. This is joint work with Alan Haynes and
Joanna Furno.
(DN)
Coupled Map Lattices (CML) have been extensively studied due to their
applications in physics and biology. From the dynamics point of view,
several methods have been used to study CML analytically, most notably
by Keller and Liverani. This talk will provide some background on CML,
recent progress in this field of study, and overview about our current
project with nonstationary local system in CML.
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