Gandalf (Pure Maths Student Seminar): Zeta functions and étale cohomology
21 November 2013 16:00 in CM221
The work on the Weil conjectures is one of the most exciting stories happened in the 20th century. These concrete statements on counting points over finite fields traced back to some of Gauss' work, and are amazingly encoded in what we now called étale cohomology, which is itself highly interesting (it generalizes Galois cohomology, gives a Hilbert Satz 90 for curves, and has applications to representation theory of algebraic groups, and etc). So this is also a good example on illustrating how an abstract machinery can be used to solve a very concrete problem. In this talk some of these smart ideas will be introduced.
Gandalf is the pure maths student seminar. Gandalf stands for the Geometry AND ALgebra Forum. It is run by and for pure postgraduates, but welcomes anyone who is interested in coming along.
Content from previous talks is available at the gandalf seminar home page.