שלחו לחבר

Weyl groups and root systems in number fields

Seminar
Speaker
Prof. Yuri Zarhin (Pennsylvania State University)
Date
08/01/2020 - 12:00 - 11:00
Place
Third floor seminar room (room 201, building 216)
Abstract

We classify the types of root systems R in the rings of integers O_K of number fields K such that the Weyl
group W(R) lies in the group generated by field automorphisms and multiplications by nonzero elements of K.
We also classify number fields K such that the lattice O_K provided with a trace-like form is isometric or similar to a root lattice. 

This is a report on a joint work with Vladimir Popov (Steklov Institute, Moscow).

תאריך עדכון אחרון : 12/12/2019