[PHK_seminar] [Cohomology]Wednesday 16 Oct, Michal Doucha

[Igor Khavkine]

Dear All,

The video recording of the talk by Michal Doucha from this week is now 
available on YouTube at

   https://youtu.be/VVZuqNa1Yl8

This link has also been recorded at the ResearchSeminars announcement

   https://researchseminars.org/talk/PHK-cohomology-seminar/111/

Best,

Igor


On 10/14/24 1:00 PM, sender of seminar announcement via phk_seminar wrote:
> Wednesday, 16 October 2024 - 13:30 to 14:30
> Place: Institute of Mathematics of ASCR, Žitná 25, Praha 1, KONIRKA in 
> the front building + ZOOM meeting
> 
> Speaker: Michal Doucha, Institute of Mathematics of ASCR
> Title: Shadowing of actions of hyperbolic groups on their boundaries
> 
> Abstract
> 
> I will give a quick introduction to general Gromov hyperbolic metric 
> spaces, in particular hyperbolic groups, and their boundaries. A very 
> useful way of studying hyperbolic groups is via their canonical actions 
> on their boundaries. I will discuss a very recent result of K. Mann et 
> al that such actions are topologically stable (although this was 
> apparently hinted by Gromov in his paper on hyperbolic groups from 1987) 
> and present my result that these actions in fact have the so-called 
> shadowing (a.k.a. pseudo-orbit tracing) property, which implies the 
> topological stablity as a corollary.
> 
> -----------------------------------------------------------------------------------------------
> 
> We shall open the seminar room + ZOOM at 13.15 for coffee and close the 
> room at 15:00
> 
> 
> Join Zoom Meeting
> 
> 
> https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRU 
> <https://cesnet.zoom.us/j/99598413922?pwd=YXNFbk50aVhleXhWSGtISFViLytRUT09>9
> 
> 
> MeetingID:99598413922
> 
> Passcode:Galois
> 
> 
> 
> For more information see the seminar web page at
> https://www.math.cas.cz/index.php/events/seminar/16
> 
> Cohomology in algebra, geometry, physics and statistics mailing list
> phk_seminar at math.cas.cz
> https://list.math.cas.cz/listinfo/phk_seminar@math.cas.cz
> 
> 
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