## Past Events at the University of British Columbia

### Past Events

- 18-Mar-08

Asymptotic stability of ground states in 3D subcritical nonlinear Schroedinger equation more››

Scientific Event

- 17-Mar-08

Cell Signalling Dynamics in Time and Space

The specificity of cellular responses to receptor stimulation is encoded by the spatial and temporal dynamics of downstream signalling networks. Computational models provide insights into the intricate relationships between stimuli and responses a more››

Scientific Event

- 14-Mar-08

The theory of the strong interactions on a space-time lattice

Quantum Chromodynamics has been accepted as the theory of the strong interactions for more than thirty years, ever since the discovery of asymptotic freedom by Gross, Politzer and Wilczek, whose work was recognized with the 2004 Nobel Prize. Des more››

Scientific Event

- 13-Mar-08

Explicit Solutions of Consumption-Investment Problems in Financial Markets with Regime Switching

We consider a financial market with different regimes that are modeled through an observable continuous-time finite-state Markov chain. The rates of returns and volatilities of the market investing assets, the bank interest rate and the investors' ut more››

Scientific Event

- 13-Mar-08

Mathematical Study of Brain Tumor Therapies

Glioma is the most serious malignant brain tumor. In order to improve the efficacy of therapies, it is important to understand its progression with therapies and its genesis. In this talk, I will first present our effort in understanding of glioma more››

Scientific Event

- 13-Mar-08

The abelian/nonabelian correspondence in Gromov-Witten theory II

Given a "good" action of a reductive complex algebraic group G on a projective manifold X, the abelian/nonabelian correspondence refers to a precise relation that exists between topological invariants (cohomology, K-theory) of the Geomet more››

Scientific Event

- 11-Mar-08

Scientific Event

- 11-Mar-08

Asymptotic Error Analysis of Finite Difference Methods

When computing approximations to PDE problems with smooth solutions using regular grids, the error has additional structure. For second order methods applied to elliptic or parabolic problems, an expansion for the error can be constructed t more››

Scientific Event

- 11-Mar-08

- 10-Mar-08

Manipulating Thin-Film Flows: From Patterned Substrates to Evaporating Systems

Here we describe two variants of thin-film flows, one involving wetting and the other involving evaporation. First, we describe the spreading of mostly wetting liquid droplets on surfaces decorated with assemblies of micron-size cylindrical posts more››

Scientific Event

- 10-Mar-08

Chern-Simons/Gromov-Witten duality

In this talk I hope to introduce Large N duality relating Chern-Simons gauge theory and Gromov-Witten theory. I will discuss some conjectures and theorems surrounding this subject and joint work with Sergiy Koshkin. more››

Scientific Event

- 6-Mar-08

The abelian/nonabelian correspondence in Gromov-Witten theory I

Given a "good" action of a reductive complex algebraic group G on a projective manifold X, the abelian/nonabelian correspondence refers to a precise relation that exists between topological invariants (cohomology, K-theory) of the Geomet more››

Scientific Event

- 6-Mar-08

Microtubules are dynamic polymers found in all eukaryotic organisms that build the cellular machines that separate chromosomes, polarize the cytoplasm, direct expansion and divide cells. Interestingly, plant cells lack the central microtubule-orga more››

Scientific Event

- 5-Mar-08

An update on spaces of embeddings

The Cerf-Morlet comparison theorem states that the group of diffeomorphisms of the compact n-ball which is the identity on the boundary is an (n+1)-fold loop space, whose (n+1)-fold de-looping is the homotopy-quotient of the group of the PL-homeom more››

Scientific Event

- 4-Mar-08

- 3-Mar-08

Asymptotic stability of lattice solitons in the energy space more››

Scientific Event

- 3-Mar-08

A Compactification of the space of Maps from Curves

We will present a new compactification of the moduli space of maps from pointed nonsingular complex projective stable curves to a nonsingular complex projective variety with prescribed ramification indices at the points. It will be explained that more››

Scientific Event

- 29-Feb-08

Optimal Strong Stability Preserving Time Discretizations

Traditional stability concepts for ODE solvers typically deal with linear equations and/or bounds involving inner-product norms only. Modern problems of interest are typically nonlinear and in many casesthe relevant bounds for the problem inv more››

Scientific Event

- 28-Feb-08

Primitive roots and the Euclidean algorithm

An integer s is called a primitive root modulo a prime p if the multiplicative set generated by s surjects onto all non-zero residue classes modulo p. Artin's primitive root conjecture states that all integers s other than -1 or squares are primitive more››

Scientific Event

- 28-Feb-08

Eigenvalues of random matrices and not the Riemann Hypothesis

Random matrix theory has been a hot topic in number theory, particularly since the Rudnick and Sarnak landmark work on the spacing of consecutive zeros of L-functions. This highly accessible talk has a far more elementary flavour, focusing on eigenva more››

Scientific Event