Spring 2002 Maryland-Penn State Semiannual Workshop

on Dynamical Systems and Related Topics

Department of Mathematics Colloquium

Room 3206, Mathematics

7:30 PM

Chez Boyle ( click for directions)

Ergodic Party

The Workshop begins. The Sunday student talks are scheduled for 20 minutes and all other talks are scheduled for 35 minutes. On Sunday afternoon, there will be parallel sessions of student talks. All talks will be in Room 3206 of the Mathematics Department unless otherwise indicated. Abstracts are posted on the conference home page, www.math.umd.edu/~mmb/md02 .

9:00-9:35
**
Vitaly Bergelson,
**
Ohio State University
*
Towards a non-commutative Hindman's Theorem
*

9:50-10:25
**
Yakov Pesin,
**
Pennsylvania State University
*
Stable ergodicity and Lyapunov exponents
*

11:00-11:35
**
Manfred Einsiedler
**
Pennsylvania State University
*
Invariant measures on SL(n,R)/Gamma
*

11:50-12:25
**
Jim Yorke**, University of Maryland
*
Learning about reality from observation
*

2:00-2:35
**
Francois Blanchard,
** IML-CNRS, Marseilles
*
Cellular automata and the Besicovitch topology on the 2-shift *

2:50-3:25
**
Tomasz Downarowicz,
**
Wroclaw University of Technology and Michigan State University
*
Sex entropy
*

3:55-4:30
** Joe Auslander**,
University of Maryland
*
The proximal relation in topological dynamics
*

4:45-5:20
**
Eli Glasner,
**
Tel Aviv University
*
Universal minimal dynamical systems
*

9:00-9:35
**
Idris Assani,
**
University of North Carolina, Chapel Hill
*
On the convergence of the averages
$\frac{1}{N}\sum_{n=1}^Nf(S^nx)g(T^nx)$
*

9:50-10:25
**
Karl Petersen,
**
University of North Carolina, Chapel Hill
*
Bounding the number of measures of maximal entropy *

11:00-11:35
**
Mahesh Nerurkar,
**
Rutgers at Camden
*
On Characterizing Distal Points
*

11:50-12:25
**
Charles Radin,
**
University of Texas, Austin
*
Using an ergodic theorem of Nevo to control problems of optimal
density
*

2:00-2:35
**
Andrey Kochergin**,
Moscow State University
*
The mixing "almost Lipshitz" reparametrization of a
flow on the two-dimensional torus
*

2:45-3:20
**
Bassam Fayad**,
Pennsylvania State University

*
On the multiplicative cohomological equation
g(x+\alpha) = g(x) e^{2\pi i \lambda \phi(x)}
*

(Over the rest of the afternoon there will be four double sessions of student talks, in Room 3206 and Room B0421.)

3:30-3:50, Room 3206

**
Alistair Windsor ** [student of Anatole Katok]

Pennsylvania State University

*
A Weak Mixing Dichotomy for Time Changes of Linear Flows
*

3:30-3:50, Room B0421

**
Karen Ball ** [student of Dan Rudolph]

University of Maryland

*
Entropy and random walks on random sceneries
*

3:50-4:15 Break

4:15-4:35, Room 3206

**
Toke Carlsen ** [student of Soren Eilers]

University of Copenhagen and University of Maryland

*
Invariants for substitutional dynamical systems
*

4:15-4:35, Room B0421

**
David Duncan ** [student of Idris Assani]

University of North Carolina, Chapel Hill

*
A Wiener-Wintner Double Recurrence Theorem
*

4:45-5:05, Room 3206

**
Huang Wen
** [student of Xiangdong Ye]

University of
Science and Technology of China, Hefei
*
Topological K-system, a third approach
*

4:45-5:05, Room B0421

**
Xavier Mela
** [student of Karl Petersen]

University of North Carolina, Chapel Hill
*
Measurable and topological properties of some nonstationary adic
transformations
*

5:15-5:35, Room 3206

**
Nikos Frantzikinakis**
[student of Yitzhak Katznelson]

Stanford University
*
The structure of strongly stationary systems
*

5:15-5:35, Room B0421

**
Chao-Hui Lin
** [student of Dan Rudolph]

University of Maryland
*
Kakutani shift equivalence for uniformly dyadic
endomorphisms
*

7:30-10:00

Chez Auslander
(
click
for directions)

Coffee and dessert

9:00-9:35
**
Ayse Sahin**,
DePaul University
*
Entropy and locally maximal entropy in Z^d subshifts
*

9:50-10:25
**
Jonathan King **,
University of Florida, Gainesville
*
Equicontinuity, flat stacks and joining-closure
*

11:00-11:35
**
Matthew Foreman **,
University of California, Irvine
*
The Classification of Ergodic Measure
Preserving Systems
*

11:50-12:25
**
Howard Weiss,
**
Pennsylvania State University
*
Does the free energy determine the potential for a lattice
gas? ("Can you hear the shape of a cookie cutter?")
*

2:00-2:35
**
Leo Butler,
**
Northwestern University
*
Integrable hamiltonian systems with positive
Lebesgue metric entropy
*

2:45-3:20
**
Xiangdong Ye,
**
University of Science and Technology of China, Hefei
*
Transitive systems with zero sequence entropy and
sequence entropy pairs
*

3:45-4:20
**
Pierre-Paul Romagnoli**, Universidad de Chile
*
Measure Theoretical Entropy for Covers and a Local
Variational Principle
*

4:30-5:05
**
Ethan Akin,
**
City College (CUNY)
*
Distality Concepts and Ellis Actions
*

9:00-9:35
**
Ian Putnam,
**
University of Victoria
*
Recent progress on topological orbit equivalence
*

9:50-10:25
**
Sergey Bezuglyi,
**
University of New South Wales and Institute for Low Temperature
Physics, Kharkov, Ukraine
*
Weak and uniform topologies for Cantor minimal systems *

10:55-11:30
**
Doug Lind,
**
University of Washington, Seattle
*
Algebraic Z^d-actions of rank one
*

11:45-12:20
**
Nelson Markley,
**
Lehigh University
*
Remote limit points on surfaces
*