University of Lethbridge

In 1979 G. Belyi proved that given any smooth curve $C$ over any number field, there is map $\beta:C \rightarrow \mathbb{P}^1$ such that $\beta$ is unramified outside of three points. This is particularly striking since Belyi's theorem is not true...

We will discuss a few basic properties of "arithmetic groups," which are certain groups of n-by-n matrices with integer entries. By definition, the subject combines algebra (group theory and matrices) with number theory (the integers), but it also...

Please bring your favourite (math) problems. Anyone with a problem to share will be given about 5 minutes to present it. We will also choose most of the speakers for the rest of the semester.

Let $L(s)$ be the $L$-function associated to a modular form of weight $k$ for the full modular group. Using spectral theory, Anton Good proved that $L(k/2+it) \ll t^{1/6} (\log t)^{5/6}$. Matti Jutila discovered a simpler proof which makes use of the...

Historically functions have been treated as a kind of meta-object. This all changed with the work of Frege, Russell and Church. Furthermore, the challenges of the paradoxes led to the formalisation of type theory by Russell. Since, functions and...

Mathematical texts can be computerised in many ways. At one end there is document imaging, at the other there are proof assistants (Mizar, Isabelle, Coq, etc.).In between, there are typesetting (e.g., LaTeX and MathML) and semantically oriented (e.g...

This is a continuation of last week's talk. I will sketch Matti Jutila's proof of a subconvex bound for a modular L-function on the critical line. The main ideas are an approximate functional equation, the use of Farey fractions, Voronoi's summation...

In this talk we will show how to exhibit large and small gaps between the zeros of the Riemann zeta function, assuming the Riemann hypothesis. This is based on a technique of Montgomery and Odlyzko. The problem of finding small gaps between the zeros...

The purpose of the Alberta Mathematics Dialogue is two-fold. In the one hand it promotes mathematical research across universities in the Province of Alberta and on the other hand it serves as a forum for discussing issues related to mathematical...

Let A denote the algebra of all linear operators on a complex vector space V—mostly finite-dimensional for the purposes of this talk. Let G be an irreducible group or semigroup contained in A. (This means that there is no subspace of V other than {0}...