On completion groups that are not complete and infinite towers of profinite groups
Seminar
Speaker
Tamar Bar-On (Bar-Ilan University)
Date
01/01/2020 - 12:00 - 11:00Add to Calendar
2020-01-01 11:00:00
2020-01-01 12:00:00
On completion groups that are not complete and infinite towers of profinite groups
We investigate profinite completions of non-strongly complete profinite groups. We present and study the tower of profinite completions. Furthermore, we study how far a non-strongly complete profinite group can be from being strongly complete, i.e. how many non-open finite-index subgroups it admits.
Third floor seminar room (room 201, building 216)
אוניברסיטת בר-אילן - Department of Mathematics
mathoffice@math.biu.ac.il
Asia/Jerusalem
public
Place
Third floor seminar room (room 201, building 216)
Abstract
We investigate profinite completions of non-strongly complete profinite groups. We present and study the tower of profinite completions. Furthermore, we study how far a non-strongly complete profinite group can be from being strongly complete, i.e. how many non-open finite-index subgroups it admits.
Last Updated Date : 16/12/2019
