Pure Maths Colloquium 2026 - 2027

Department of Mathematics, University of Manchester

Wednesdays at 1:30pm (once a month)

Frank Adams 1, Alan Turing Building

Contacts Vahagn Aslanyan Yotam Smilansky

7th October 2026

Rational points on algebraic curves

Martin Orr

University of Manchester

Understanding rational solutions of polynomials in two variables is a classical theme in number theory. For example, Fermat's last theorem can be described in this way. In this talk, I will explain how this may be interpreted geometrically as the study of rational points on algebraic curves. I will describe some of the big historical results, including Mordell's famous theorem on elliptic curves and conjecture on higher-genus curves (dating from his time in Manchester). Then I will outline some more recent developments involving bounds for the number of rational points on curves, algorithms that (sometimes) find such points, and my own work on bounding the size of these points. The talk will be accessible to postgraduate students and will not assume prior knowledge about algebraic geometry or number theory.

11th November 2026

TBD

Valentina Disarlo

University of Manchester