## Scientific Lectures

- 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››

University of British Columbia

- 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››

University of British Columbia

- 28-Feb-08

- 26-Feb-08

Regularity of optimal transportation maps more››

University of British Columbia

- 25-Feb-08

Theories of the General Ocean Circulation

University of British Columbia

- 22-Feb-08

Moving Unstructured Mesh Methods

Simulation of moving physical interfaces in 3-D is complicated by the need to (1) resolve complex realistic geometries with a spatial discretization, (2) accurately compute evolving physical fields on the discretization, and (3) evolve the di more››

Simon Fraser University

- 22-Feb-08

- 21-Feb-08

Modelling the Endothelial Cell Response to Fluid Flow

Following the onset of shear stress due to fluid flow endothelial cells polarise and elongate in the direction of flow. How the mechanical signal is transformed into an organised and directed response is poorly understood. A multi-scale cellular P more››

University of British Columbia

- 7-Feb-08

An extension to the Brun-Titchmarsh theorem

The Siegel-Walfisz theorem states that for any B>0, we have Sp=x, p?d (mod v) 1 ~ x/f(v) log(x) for v = logB(x) and (v,d)=1. This only gives an asymptotic formula for the number of primes in an arithmetic progression for quite a small modulus v co more››

Simon Fraser University

- 7-Feb-08

Manin conjectures for K3 surfaces

The Manin conjectures describe for geometrically easy varieties how the number of their rational points of bounded height should grow as the height bound varies. In this talk I will describe recent computations that suggest a similar statement for more››

Simon Fraser University

- 7-Feb-08

Newton Polyhedra and Sharp Estimates for Oscillatory Integrals more››

University of British Columbia

- 31-Jan-08

When optimization becomes irrelevant: time-inconsistency and its consequences

In optimal control, one traditionally discounts the future at a constant rate: a gain u occurring at time t>0 is valued today at u exp(-rt), where r is the discount rate. If non-constant discount rates are used, as they should more››

University of Victoria

- 29-Jan-08

Root numbers and Selmer groups of elliptic curves

The theory of root numbers predicts when elliptic curves over number fields have rational points of infinite order. In this talk, we shall discuss results which bring together the root numbers and non-commutative Iwasawa theory. It is joint work with more››

University of British Columbia

- 29-Jan-08

Elliptic divisibility sequences are integer recurrence sequences, each of which is associated to an elliptic curve over the rationals together with a rational point on that curve. I'll give the background on these and present a higher-dimensional ana more››

University of British Columbia

- 24-Jan-08

Financial Hedging of Operational Flexibility

We extend the framework of real options to value the compound timing option owned by a manager of an industrial asset. The operator has control over the production modes, but faces operational constraints which introduce path-dependency. Moreover, more››

University of British Columbia

- 18-Jan-08

The purpose of this talk is to explore the new generation of computational mechanics procedures based on modern developments in computational geometry. The emphasis will be on the Isogeometric approach in which basis functions generated from NURBS more››

University of Alberta

- 18-Jan-08

Monitoring the health of Queensland's rivers: steps to designing an optimal spatial sampling scheme

Spatial sampling design is a key step in developing an optimal large-scale, multi-objective aquatic monitoring program. Aquatic systems can be complex and irregular, thus it is critical to ensure that a spatial design is statistically valid, imple more››

Simon Fraser University

- 17-Jan-08

- 17-Jan-08

Determinants of Laplacians as functions on spaces of metrics more››

University of British Columbia

- 15-Jan-08

Polynomial configurations in difference sets more››

University of British Columbia