**Date & Time:** Tuesday, February 16, 2016, 15:30-17:30

**Venue:** Ramanujan Hall

**Title:** Time-like metrics.

**Speaker: **Athanase Papadopoulos, University of Strasbourg, France

**Abstract: **Time-like metric spaces are topological spaces equipped with an
order relation < and a distance function, where the distance from x and y
is defined only when x < y. The notion was introduced by H. Busemann, and
the motivation comes from the theory of relativity in physics. In this
talk, I will describe the basics of this theory and give some examples.