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Fall 2008 Seminars Schedule
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Mondays
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Graduate-Organized Talks Seminar
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Time: 3:00-4:00pm *
Location: Cupples I, Room 199
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Host: Larry Lin
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Analysis Seminar
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Time: 4:00-5:00pm *
Location: Cupples I, Room 199
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Host: Professor John McCarthy
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Algebraic Geometry Seminar
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Time: 4:00-5:30pm *
Location: Cupples I, Room 111
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Host: Professor Mohan Kumar
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Tuesdays
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Symplectic Geometry and Topology Seminar
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Time: 4:00-5:00pm *
Location: Cupples I, Room 216
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Host: Professor Xiang Tang
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Statistics Seminar
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Time: 4:30-5:30pm *
Location: Cupples I, Room 199
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Host: Professor Jimin Ding
Statistics Seminar Schedule
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Wednesdays
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Graduate Student Seminar
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Time: 4:00-5:00pm *
Location: Cupples I, Room 199
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Host: Professor Steven Krantz
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Thursdays
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Topology Seminar
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Time: 10:00-11:00am *
Location: Cupples I, Room 199
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Host: Professor Rachel Roberts
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Combinatorics and Group Theory Seminar
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Time: 3:30-4:30pm *
Location: Eads, Room 209
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Host: Jonathan Browder
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Fridays
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Wavelet Seminar
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Time: 3:30-4:30pm *
Location: Cupples I, Room 199
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Host: Professor Guido Weiss
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* Times may vary, please consult the schedule below for details:
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DECEMBER 2008
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Monday, December 1
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Graduate-Organized Talks Seminar
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Time: 3:00-4:00pm
Location: Cupples I, Room 199
Host: Larry Lin
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Speaker: Michael Deutsch
Department of Mathematics, Washington University in St. Louis
Title: Calc 3000
Abstract: In this very elementary talk, you will finally be convinced (if
you're not already) that the manifold theory you did (or are now doing) in
the geometry qual truly and beautifully is a generalization of the
analytic geometry you did back in Calc 3.
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Monday, December 1
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Analysis Seminar
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Time: 4:00-5:00pm
Location: Cupples I, Room 199
Host: Prof. John McCarthy
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Speaker: Chauvenet Lecturer Geir Arne Hjelle
Department of Mathematics, Washington University in St. Louis
Title: Finite Boundary Interpolation
Abstract: Given distinct points z_1, ..., z_n, and points w_1, ..., w_n all on the
unit circle, we want to find functions that interpolate z_i -> w_i. This
problem is surprinsingly different from the regular Pick problem (all
points in the unit disk). For instance, there is always a solution, and
the solution is never unique. In fact, there are always infintely many
solutions with Blaschke products of degree n-1.
We will discuss these well known results, and then talk about how to
classify different problems, and maybe find "best" solutions to certain
classes of problems.
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Tuesday, December 2
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Statistics Seminar
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Time: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Assist. Prof. Jimin Ding
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CANCELLED. Rescheduled. See Tuesday, December 9
Speaker: Research Assistant Professor Yan Yan
Division of Biostatistics, Washington University School of Medicine
Title: Competing Risks and Multistate Models in Survival Analysis
Abstract: Chapter 8 in Kalbfleish and Prentice's book, The Statistical Analysis of Failure Time Data.
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Wednesday, December 3
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Graduate Student Seminar
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Time: 4:00-5:00pm, pizza afterward
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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Speaker: Professor Quo-Shin Chi
Department of Mathematics, Washington University in St. Louis
Title: The Eightfold Way
Abstract: Buddha teaches one to transcend the human sufferings and future
states of rebirth to reach nirvana by practicing the eightfold way. In this
talk, I will talk about The Eightfold Way, the sculpture by Helaman Ferguson
standing in front of MSRI, which is the artist's Euclidean rendition of the
celebrated Klein quartic curve of genus 3, that achieves the maximum
symmetry of automorphisms (168 in number) on a surface of genus 3. I hope at
the end of the talk folks can be convinced why to us mathematicians, we can
reach the ultimate enlightenment when we, as we mimic monk's chants "Nan
Woo, Nan Woo, ...", complete the eightfold turn of
the dharma wheel.
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Thursday, December 4
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Minor Oral
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Time: 3:00-4:00pm
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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Speaker: Baili Min
Department of Mathematics, Washington University in St. Louis
Title: Divisors and the Riemann Roch Theorem
Abstract: For a compact Riemann surface M, we can define divisors on it which
form a group and they can be partially ordered. Consequently each
non-zero meromorphic function on M determines a divisor, and so does
each non-zero meromorphic differential. Now given an arbitrary
divisor D, we have two vector spaces: L(D), space of meromorphic
functions whose divisors are greater or equal to D, and \Omega(D),
space of abelian differentials whose divisors are greater or equal to
D. Then Riemann-Roch Theorem states a relation between the dimension
of L(D^(-1)) and dimension of \Omega(D) in terms of the degree of D
and the genus of M. This theorem is very important in the theory of
Riemann surfaces.
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Thursday, December 4
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Assist. Prof. Jimin Ding
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Speaker: Assistant Professor Scott Holan
Department of Statistics, University of Missouri-Columbia
Title: Hierarchical Bayesian Markov Switching Models with Application to Predicting Spawning Success of Shovelnose Sturgeon
Abstract: The timing of spawning in fish is tightly linked to environmental factors; however, these factors are not very well understood for many species. Specifically, little information is available to guide recruitment efforts for endangered species such as the sturgeon. Therefore, we propose a Bayesian hierarchical model for predicting spawning success of the shovelnose sturgeon, which uses both biological and behavioral (longitudinal) data. In particular, we use data produced from a tracking study conducted in the Lower Missouri River. The data produced from this study consist of biological variables associated with readiness to spawn along with longitudinal behavioral data collected using telemetry and archival data storage tags. These high frequency data are complex both biologically and in the underlying behavioral process. To accommodate such complexity we developed a hierarchical linear regression model that uses an eigenvalue predictor, derived from the transition probability matrix of a two-state Markov switching model with GARCH dynamics. Finally, in order to minimize the computational burden associated with estimation of this model, a parallel computing approach is proposed.
This is joint work with:
Ginger M. Davis – University of Virginia
Mark L. Wildhaber, Aaron J. DeLonay, Diana M. Papoulias and Janice Bryan – USGS
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Friday, December 5
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Thesis Defense
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Time: TBA
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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CANCELLED.
Speaker: Bennett Standeven
Department of Mathematics, Washington University in St. Louis
Title: The Role of First Order Logic in Complex Analysis of Several
Variables
Abstract: Over any complex variety $V$, there may be defined an algebra of locally
holomorphic functions $\OO(V)$. The first-order properties of these
algebras remain largely unstudied, although \cite{BHRFOCI} is an extensive
study of such algebras in one complex variable.
Just as the algebra of germs at a point plays an important role in the
study of multivariable complex analysis, the first-order theory of this
algebra should play an important role in a study of the first-order
theories of other holomorphic function algebras.
We will focus on an axiomatic characterization of the theory, carried as
far as a proof of the Ruckert Nullstellensatz based on the axioms. Several
related results, including the Weierstrass theorems and the theory of
dimensions of ideals, will also be covered.
The use of first-order logic to prove such results makes it possible to
define algorithms to construct the entities guaranteed by the theorems,
and to place explicit bounds on their size or complexity.
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Monday, December 8
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Graduate-Organized Talks Seminar
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Time: 3:30-4:00pm, pizza afterward
Location: Cupples I, Room 199
Host: Larry Lin
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Speaker: Brian Maurizi
Senior Quantitative Analyst, Ameren Energy
Title: The Economic Dispatch of Power Plants
Abstract: A classic problem in applied mathematics is that of how to
optimally dispatch electric power plants. Put more simply, if X
megawatts of electricity are needed, and you have plants P_1, ..., P_n
available, how much should each plant generate? The complexity arises
because the "cost function" for a power plant is in general not
linear; it's harder to get more power out of a plant when it's already
producing at close to its maximum, versus getting more power out of a
plant that is producing at its minimum. In an ideal case, this is a
highly constrained quadratic programming problem, and the real world
is far from ideal....
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Tuesday, December 9
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Statistics Seminar
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Time: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Assist. Prof. Jimin Ding
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Speaker: Research Assistant Professor Yan Yan
Division of Biostatistics, Washington University School of Medicine
Title: Competing Risks and Multistate Models in Survival Analysis
Abstract: Chapter 8 in Kalbfleish and Prentice's book, The Statistical Analysis of Failure Time Data.
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Wednesday, December 10
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Graduate Student Seminar
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Time: 4:00-5:00pm, pizza afterward
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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Speaker: Professor Edward Wilson
Department of Mathematics, Washington University in St. Louis
Title: Application of Zak Transforms to Abelian Group Representations
Abstract: Much of harmonic analysis on groups revolves around diagonalizing
a commuting family of unitary operators. For representations of discrete
abelian groups, Zak transforms achieve the desired diagonalization in an
especially nice way and are elementary in the sense that they rely only on
the properties of Fourier series.
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Monday, December 15
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Colloquium
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Time: 12:00-1:00pm
Location: Cupples I, Room 199
Host: Prof. Rachel Roberts
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Speaker: Professor Maggy Tomova
Department of Mathematics, University of Iowa
Title: Thin position for knots
Abstract: In preparation for the holiday season we will discuss how knots keep
themselves in shape. This talk will be accessible to a general audience and
will include lots of pictures. Audience participation will be encouraged.
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Monday, December 15
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Seminar
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Time: 1:00-2:00pm
Location: Cupples I, Room 199
Host: Prof. Rachel Roberts
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Speaker: Professor Maggy Tomova
Department of Mathematics, University of Iowa
Title: Heegaard splittings and bridge surfaces
Abstract: A Heegaard splitting is a decomposition of the manifold into two simple
pieces. A bridge surface similarly decomposes a knot complement into two
easy to understand pieces. I will talk about the similarities and
differences between these two objects and explain the extensions of some
classical results about Heegaard splittings to bridge surfaces.
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Spring 2009 Seminars Schedule
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JANUARY 2009
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Monday, January 12
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Analysis Seminar
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Time:4:00-5:00pm
Location: Cupples I, Room 199
Host: Prof. John McCarthy
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Speaker: Professor John McCarthy
Department of Mathematics, Washington University in St. Louis
Title: Organizational meeting.
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Thursday, January 15
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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Speaker: Professor Kang-Tae Kim
Department of Mathematics, Pohang University of Science and Technology
Title: Functions holomorphic along a holomorphic vector field
Abstract: In 1977, F. Forelli proved: if a function defined on the
unit ball in complex $n$-dimensional Euclidean space is holomorphic on
every complex 1-dimensional complex line through the origin and if it
is indefinitely differentiable at the origin, then the function is
holomorphic. It was commented over the years that there seem no
significant improvements possible. E. Poletsky of Syracuse (NY) and
G. Schmalz of Armidale (Australia) and I were fortunate to be able to
link this theorem with holomorphic vector fields and Analytic
Differential Equations and then to obtain an improvement of Forelli's
theorem, which I would like to discuss in the colloquium.
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FEBRUARY 2009
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Thursday, February 5
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Prof. Rachel Roberts
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Speaker: Assistant Professor Josh Sabloff
Department of Mathematics, Haverford College
Title: TBA
Abstract: TBA
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Thursday, February 19
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Prof. Steven Krantz
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Speaker: Assistant Professor Svitlana Mayboroda
Department of Mathematics, Purdue University
Title: Harmonic analysis and elliptic equations in non-smooth domains
Abstract: Despite its long history, the theory of elliptic partial
differential
equations is abundant with open problems. We will discuss the main
achievements in the
theory, recent developments, surprising paradoxes related to the behavior
of solutions
near the boundary, and some fundamental questions which still remain open.
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MARCH 2009
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Tuesday, March 24
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Roever Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Prof. Gary Jensen
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Speaker: Professor Robert Osserman
Mathematical Sciences Research Institute
Title: TBA
Abstract: TBA
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Wednesday, March 25
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Lecture
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Time: 5:00-6:00pm
Location: Cupples I, Room 199
Host: Prof. Gary Jensen
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Speaker: Professor Robert Osserman
Mathematical Sciences Research Institute
Title: TBA
Abstract: TBA
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APRIL 2009
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Thursday, April 2
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Host: Assist. Prof. Jimin Ding
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Speaker: Assistant Professor Shuangge Ma
Department of Biological and Biomedical Sciences, Epidemiology and Public Health, Yale University
Title: TBA
Abstract: TBA
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Thursday, April 2
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Loeb Undergraduate Mathematics Lecture
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Time: 4:30-5:30pm
Location: TBA
Host: Prof. Ronald Freiwald
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Speaker: Professor Ravi Vakil
Department of Mathematics, Stanford University
Title: The Mathematics of Doodling
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Thursday, April 9
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Hirschmann Lecture
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Hosts: Prof. Guido Weiss, Prof. Edward Wilson
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Speaker: Professor Steve Wainger
Department of Mathematics, University of Wisconsin
Title: TBA
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Thursday, April 16
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Colloquium
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Time: Tea: 4:00-4:30pm
Talk: 4:30-5:30pm
Location: Cupples I, Room 199
Hosts: Assist. Prof. Jimin Ding, Assist. Prof. Nan Lin
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Speaker: Assistan Professor Ji Zhu
Department of Mathematics, University of Michigan
Title: TBA
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