º«¹úÂãÎè

Updated: Thu, 02/13/2025 - 09:17

Due to today’s storm, º«¹úÂãÎè classes are cancelled. Please note that campuses remain open, including Libraries, according to their schedules. For details, see the Alert email.


En raison de la tempête, les cours à º«¹úÂãÎè sont annulés aujourd’hui. Veuillez noter que les campus restent ouverts, y compris les bibliothèques selon leurs horaires. Pour plus de détails, voir le courriel d'alerte.

Event

Annette Karrer (º«¹úÂãÎè)

Wednesday, January 25, 2023 15:00to16:00
Burnside Hall Room 920, 805 rue Sherbrooke Ouest, Montreal, QC, H3A 0B9, CA

Title: From Stalling's Theorem to Morse boundaries.

´¡²ú²õ³Ù°ù²¹³¦³Ù:ÌýEvery finitely generated group G has an associated topological space, called a Morse boundary. It was introduced by a combination of Cordes and Charney--Sultan and captures the hyperbolic-like behavior of G at infinity. In this talk, I will motivate the research on Morse boundaries in several steps. First, I will explain Stalling's theorem -- a fundamental theorem in geometric group theory. Afterward, I will explain an analogous statement for so-called Gromov boundaries of Gromov-hyperbolic groups. As Morse boundaries generalize Gromov boundaries, this raises the question as to whether one can generalize this statement to Morse boundaries. Finally, we will see the relationship between a result on Morse boundaries of graphs of groups and this problem. Results presented are joint with Elia Fioravanti.

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