Filtrations of absolute Galois groups

Seminar
Speaker
Prof. Ido Efrat (Ben-Gurion University)
Date
30/04/2014 - 10:30Add to Calendar 2014-04-30 10:30:00 2014-04-30 10:30:00 Filtrations of absolute Galois groups A profinite group is equipped with various standard filtrations by closed normal subgroup, such as the lower central series, the lower p-central series, and the p-Zassenhaus filtration. In the case of an absolute Galois group of a field, these filtrations are related to the arithmetic  structure of the field, as well as with its Galois cohomology.  We will describe some recent  results on these connections, in particular with the Massy product in Galois cohomology.    אוניברסיטת בר-אילן - המחלקה למתמטיקה mathoffice@math.biu.ac.il Asia/Jerusalem public
Abstract


A profinite group is equipped with various standard filtrations by closed normal subgroup,
such as the lower central series, the lower p-central series, and the p-Zassenhaus filtration.
In the case of an absolute Galois group of a field, these filtrations are related to the arithmetic 
structure of the field, as well as with its Galois cohomology.  We will describe some recent 
results on these connections, in particular with the Massy product in Galois cohomology. 

 

תאריך עדכון אחרון : 30/04/2014