MONDAY, October 1, 2007
APPLIED ANALYSIS AND PDE READING SEMINAR PSA 304 1:40 p.m.
Moderators: Slim Ibrahim, Svetlana Roudenko, Sergei Suslov,
Department of Mathematics and Statistics
"Local and Global Analysis of Nonlinear Dispersive Equations"
ABSTRACT: We study in details modern approaches in Analysis and
Nonlinear PDEs based on the book from CBMS series by Terence
Tao (Field's Medalist 2006). Graduate students and postdocs are
especially welcome.
TUESDAY, October 2, 2007
MATHEMATICS AND COGNITION SEMINAR ISTB1 401 12:15 p.m.
Huan Liu, Department of Computer Science and Engineering
"Issues of Searching for 'Familiar Strangers' on Blogosphere"
ABSTRACT: In this work, we examine familiar strangers on
Blogosphere and issues of finding them. In our daily life,
familiar strangers, as coined by Stanley Milgram, do not know
each other, but frequently exhibit some common patterns.
Blogosphere is a part of the Web where bloggers post in
individual or community blog sites. The nature of the Web is a
scale-free network, which determines that a power law
distribution applies to bloggers. That is, the majority
bloggers are only connected with a small number of fellow
bloggers, and these blogging groups are largely disconnected
from each other. Familiar strangers on Blogosphere are not
directly connected, but share some patterns in their blogging
activities. We present a new problem: Aggregating familiar
strangers on Blogosphere that allows for better personalized
services, targeted marketing, exploration of new business
opportunities, and predictive modeling and marketing. Finding
familiar strangers on Blogosphere presents a challenge
resulting from their disconnectedness. We look at typical blogs
and understand the status quo, while seeking innovative ways to
improve business intelligence. We define the problem of
searching for familiar strangers on Blogosphere, elucidate the
significance of doing so, study the challenges of finding them,
and present and discuss some potential approaches.
Download Preprint:
<http://www.public.asu.edu/~huanliu/papers/ngdm07.pdf>
For additional information e-mail tom.taylor@asu.edu
WEDNESDAY, October 3, 2007
DISTINGUISHED LECTURE SERIES PSA 104 1:40 p.m.
Mats Gyllenberg, University of Helsinki, Finland
"Ecology and Evolution of Symbiosis in Metapopulations"
ABSTRACT: I present a structured metapopulation model for the
interaction between grasses and endophytes. I investigate both
population dynamics (steady states and their stability) and co-
evolution of traits in the host and in the symbiont.
Refreshments will be served in PSA 206 at 2:30 p.m.
COMPRESSIVE SENSING SEMINAR ECA 225 4:00 p.m.
(In cooperation with Department of Electrical Engineering)
Video Lecture by Emmanuel J. Candès,
California Institute of Technology
"The uniform uncertainty principle - Part II"
ABSTRACT: We introduce a strong form of uncertainty relation
and discuss its fundamental role in the theory of compressive
sampling. We give examples of random sensing matrices obeying
this strong uncertainty principle; e.g., Gaussian matrices.
A summary of the key elements of last week's lecture and an
introduction to this week's material will be provided by this
week's moderator, Doug Cochran.
THURSDAY, October 4, 2007
PIZZA LUNCH FOR GRADUATE STUDENTS PSA 206 12:00 p.m.
WITH DISTINGUISHED LECTURER MATS GYLLENBERG
"Careers in Maths, And How It Is In Europe"
All math graduate students are invited
COLLOQUIUM PSA 206 4:00 p.m.
Paul Muhly, University of Iowa
"A Finite Dimensional Introduction to Operator Algebra"
ABSTRACT: In this talk I will discuss how some developments in
ring theory that occurred in the 1940s have come to shape
certain current developments in operator algebra. This is a
talk for a general audience. Students with a background in
either algebra or analysis should have no difficulty following
most of it and are encouraged to attend.
Refreshments will be served in PSA 206 at 3:30 p.m.
FRIDAY, October 5, 2007
C*-ALGEBRA SEMINAR PSA 307 9.40 a.m.
Paul Muhly, University of Iowa
"Groupoid Methods in Wavelet and Fractal Analysis"
ABSTRACT: In this talk, I will show how groupoids may be used
to provide a unified perspective from which to view a number of
developments in the theory of wavelets, on the one hand, and
fractal analysis, on the other. Groupoids may be used to
explain how certain representations of the Cuntz algebra are
naturally associated with wavelet analysis. These
representations appear as rather ad hoc constructs in the
literature, but the groupoid perspective shows that Cuntz
isometries are part of the underlying geometry