Point counting and topology - 1 of 2

Benson Farb
Tue, Jun 11, 2019
PIMS, University of British Columbia
Workshop on Arithmetic Topology
In this first talk I will explain how the machinery of the Weil Conjectures can be used to transfer information back and forth between the topology of a complex algebraic variety and its F_q points. A sample question: How many F_q-points does a random smooth cubic surface have? This was recently answered by Ronno Das using his (purely topological) computation of the cohomology of the universal smooth, complex cubic surface. This is part of a much larger circle of fascinating problems, most completely open.


This is the first lecture in a two part series: part 2