Groups acting on fractals, hyperbolicity and self-similarity, Paris

Apr 11, 2022, 8:30 AM → Jul 8, 2022, 7:30 PM Europe/Paris

Amphitheater Darboux (IHP)

Thematic trimester program at Institut Henri Poincaré, Paris

Groups acting on fractals, hyperbolicity and self-similarity

April 11th to July 8th, 2022

 

Back to the thematic trimester main page.

Program : 

 

First week  -- April 11th to 15th, 2022 CIRM Introductory School (Marseille) 

 

IHP Program : 19-22 April,  
Mini-course "Projection complexes and applications to mapping class groups" by M. Bestvina.  
Tuesday 2pm, Wednesday 2pm, Friday 10am,  Live at https://www.ihp.fr/fr
Recordings.  -Lecture 1-  -Lecture 2- - Lecture 3 - (no sound for 11’ in lecture 3)

 

--  April 25th to 29th, 2022: Conference Mapping class groups and Out(Fn) (IHP, Paris)

 

IHP Program : 2-13 may,  
Mini-course "Random walks on Grigorchuk groups and growth estimates",  by T. Zheng.
Slightly postponed !  Tuesday 10th 2pm,  Wednesday 11th 2pm, Friday 13th 10am.    Live at https://www.ihp.fr/fr

 

IHP Program : 16-20 may,
Mini-course "Hyperbolic groupoids" by V. Nekrashevych.
Tuesday 2pm, Wednesday 2pm, Friday 10am, Live at https://www.ihp.fr/fr
Lecture 1 (audio missing)  -Lecture 2-  - Lecture 3 -

 

IHP Program : 23-27 may, 
Mini-course  (Applications of descriptive set theory to the study of geometric and model theoretic properties of groups.) by D. Osin.
Tuesday 2pm, Wednesday 2pm, Friday 10am, Live at https://www.ihp.fr/fr
-Lecture 1-  -Lecture 2-

--  May 30th to June 3rd, 2022:  Conference Self-similarity of groups, trees and fractals (IHP, Paris).

 

IHP Program : 7-17 June, 
Mini-course by J. Mackay (Conformal dimension and hyperbolic groups).
Tuesdays 2pm, Wednesdays 2pm,  Live at https://www.ihp.fr/fr
 

--  June 20th to 24th, 2022 : Conference  Hyperbolic groups and their generalisations (IHP, Paris).

 

IHP Program : 27 June-8 July, TBA. 

 

Comité d’organisation scientifique :

• François Dahmani (Université Grenoble Alpes)
• Anna Erschler (ENS Paris)
• Camille Horbez (Université Paris Saclay)
• Dani Wise (McGill University)

 

Poster T2-2022.pdf

Authorization to use images IHP-EN-Authorization-to-use-images-captations.pdf

Mon, April 11

10:00 AM → 11:30 AM 1/4

mini course of Tianyi Zheng

Tue, April 19

2:00 PM → 3:30 PM Projection complexes and applications to mapping class groups 1/3

Minicours par Mladen Bestvina

http://omnilive.ihp.fr:8080/625ea4c4118ec916c0e8aac1

Wed, April 20

2:00 PM → 3:30 PM Projection complexes and applications to mapping class groups 2/3

Minicours par Mladen Bestvina

Fri, April 22

10:00 AM → 11:30 AM Projection complexes and applications to mapping class groups 3/3

Minicours par Mladen Bestvina

Tue, April 26

9:30 AM → 10:30 AM Conference "Mapping Class Groups and Out(F_n)". 1

10:45 AM → 11:45 AM Conference "Mapping Class Groups and Out(F_n)". 1

1:30 PM → 2:30 PM Conference "Mapping Class Groups and Out(F_n)". 1

2:45 PM → 3:45 PM Conference "Mapping Class Groups and Out(F_n)". 1

4:00 PM → 5:00 PM Conference "Mapping Class Groups and Out(F_n)". 1

Wed, April 27

9:30 AM → 10:30 AM Conference "Mapping Class Groups and Out(F_n)". 1

10:45 AM → 11:45 AM Conference "Mapping Class Groups and Out(F_n)". 1

1:30 PM → 2:30 PM Conference "Mapping Class Groups and Out(F_n)". 1

2:45 PM → 3:45 PM Conference "Mapping Class Groups and Out(F_n)". 1

4:00 PM → 5:00 PM Conference "Mapping Class Groups and Out(F_n)". 1

Thu, April 28

9:30 AM → 10:30 AM Conference "Mapping Class Groups and Out(F_n)". 1

10:45 AM → 11:45 AM Conference "Mapping Class Groups and Out(F_n)". 1

1:30 PM → 2:30 PM Conference "Mapping Class Groups and Out(F_n)". 1

2:45 PM → 3:45 PM Conference "Mapping Class Groups and Out(F_n)". 1

4:00 PM → 5:00 PM Conference "Mapping Class Groups and Out(F_n)". 1

Fri, April 29

9:30 AM → 10:30 AM Conference "Mapping Class Groups and Out(F_n)". 1

10:40 AM → 11:40 AM Conference "Mapping Class Groups and Out(F_n)". 1

11:45 AM → 12:45 PM Conference "Mapping Class Groups and Out(F_n)". 1

Tue, May 3

10:00 AM → 12:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

Speakers: Abdalrazzaq Zalloum, Sami Douba (McGill University), Shaked Bader , Thomas Ng (Technion)

Wed, May 4

10:00 AM → 12:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

Conveners: Abdalrazzaq Zalloum, Sami Douba (McGill University), Shaked Bader , Thomas Ng (Technion)

Tue, May 10

10:00 AM → 12:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

Conveners: Abdalrazzaq Zalloum, Shaked Bader , Thomas Ng (Technion)

2:00 PM → 3:15 PM Random walks on Grigorchuk groups and growth estimates, by T. Zheng 1/3

Minicours de Tianyi Zheng

Wed, May 11

10:00 AM → 12:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

Conveners: Abdalrazzaq Zalloum, Shaked Bader , Thomas Ng (Technion)

2:00 PM → 3:15 PM Random walks on Grigorchuk groups and growth estimates, 2/3 by T. Zheng

Mini cours de Tianyi Zheng

Fri, May 13

10:00 AM → 11:15 AM Random walks on Grigorchuk groups and growth estimates, 3/3, by Tianyi Zheng

Minicours de Tianyi Zheng

Tue, May 17

2:00 PM → 3:00 PM Seminar - Jingyn Huang: Measure equivalence superrigidity for some generalized Higman groups

Speaker: Jingyin Huang (Ohio State University)

Wed, May 18

11:00 AM → 12:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

2:00 PM → 3:00 PM Seminar - Dani Wise: Continuously many different residually finite groups

Fri, May 20

10:00 AM → 11:15 AM Mini course- Volodia Nekrashevych: Hyperbolic groupoids 1/3

Minicours de Volodia Nekrashevych

2:00 PM → 3:00 PM Seminar exclusively targeting graduate students and post-docs

Some participants of the program started an informal seminar on topics related to geometric group theory. Such a seminar exclusively targets graduate students and post-docs.

Each week will contain a set of lectures/a mini course taught by a graduate student or a post-doc.

No recording. No live retransmission.

Conveners: Abdalrazzaq Zalloum, Paige Helms (University of Washington), Shaked Bader , Thomas Ng (Technion)

Mon, May 23

2:00 PM → 3:15 PM Hyperbolic groupoids, 2/3

Minicours de Volodia Nekrashevych

Tue, May 24

10:00 AM → 11:15 AM Hyperbolic groupoids, 3/3

Minicours de Volodia Nekrashevych

2:00 PM → 3:30 PM Applications of descriptive set theory to the study of geometric and model theoretic properties of groups 1/2

Minicours de Denis Osin

Wed, May 25

2:30 PM → 4:00 PM Applications of descriptive set theory to the study of geometric and model theoretic properties of groups 2/2

Minicours de Denis Osin

Mon, May 30

9:45 AM → 10:40 AM Talk 1 - Laurent Bartholdi

10:40 AM → 11:00 AM Break

11:00 AM → 11:55 AM Talk 2- Nicolas Matte Bon

2:00 PM → 2:55 PM Talk 3- Adrien Le Boudec

2:55 PM → 3:50 PM Talk 4- Collin Bleak

3:50 PM → 4:10 PM Break

4:10 PM → 5:05 PM Talk 5- Volodia Nekrashevych

Tue, May 31

9:00 AM → 9:55 AM Talk 1 - Bruno Duchesne

9:55 AM → 10:50 AM Talk 2- Francesco Matucci

10:50 AM → 11:10 AM Break

11:10 AM → 12:05 PM Talk 3- Alexander Teplyaev

2:00 PM → 2:55 PM Talk 4 - Nicolas Monod

2:55 PM → 3:50 PM Talk 5 - Yash Lodha

3:50 PM → 4:10 PM Break

4:10 PM → 5:05 PM Talk 6- Victor Guba

Wed, June 1

9:00 AM → 9:55 AM Talk 1- Jeremie Brieussel

9:55 AM → 10:50 AM Talk 2- Ivan Mitrofanov

10:50 AM → 11:10 AM Break

11:10 AM → 12:05 PM Talk 3- Marialaura Noce

2:00 PM → 2:55 PM Talk 4 - Rostislav Grigorchuk

2:55 PM → 3:50 PM Talk 5 - Alejandra Garrido

3:50 PM → 4:10 PM Break

4:10 PM → 5:05 PM Talk 6- Kate Juschenko

Thu, June 2

9:00 AM → 9:55 AM Talk 1 - Dominik Francoeur

9:55 AM → 10:50 AM Talk 2 - Yair Hartman

10:50 AM → 11:10 AM Break

2:00 PM → 2:55 PM Talk 4 - Vadim Kaimanovich

2:55 PM → 3:50 PM Talk 5 - Anitha Thillasundaram

3:50 PM → 4:10 PM Break

4:10 PM → 5:05 PM Talk 6 - Omer Tamuz

Fri, June 3

9:00 AM → 9:55 AM Talk 1 - Yves de Cornulier

9:55 AM → 10:50 AM Talk 2 - Tianyi Zheng

10:50 AM → 11:10 AM Break

11:10 AM → 12:05 PM Talk 3 - Mikael de la Salle

1:30 PM → 2:25 PM Talk 4 - Josh Frisch

Tue, June 7

10:00 AM → 12:00 PM Graduate students/Post-docs seminar - Rodrigo De Pool

Finite rigidity and automorphisms of the non separating curve complex

No live- No recording

Speaker: Rodrigo Alonso De Pool Alcántara (ICMAT)

2:00 PM → 3:30 PM 1/4

Minicours de John Mackay

Wed, June 8

10:00 AM → 12:00 PM Graduate students/Post-docs seminar - Corentin Lebars

Boundary theory and non-positive curvature (1/2)

No live No recording

Speaker: Corentin Lebars

2:00 PM → 3:30 PM 2/4

Minicours de John Mackay

Tue, June 14

10:00 AM → 12:00 PM Graduate students/Post-docs seminar - Corentin Lebars

Boundary theory and non-positive curvature (2/2)

No live - No recording

Speaker: Corentin Lebars

2:00 PM → 3:30 PM 3/4 Minicours de John Mackay

Conformal dimension and hyperbolic groups (2/3)

Wed, June 15

10:00 AM → 12:00 PM Graduate students/Post-docs seminar - Xabier Legaspi Juanatey

No live - No recording
The geometry of constricting elements

Speaker: Xabier Legaspi Juanatey

2:00 PM → 3:30 PM 4/4

Minicours de John Mackay

Thu, June 16

2:00 PM → 3:00 PM CANCELLED

TBA

Fri, June 17

10:30 AM → 11:30 AM Seminar- Mahan MJ

Combining Fuchsian groups with polynomial dynamics via orbit equivalence

Mon, June 20

8:45 AM → 9:15 AM Participants registration

9:30 AM → 10:30 AM Talk 1- Koji Fujiwara

Title: The rates of growth in an acylindrically hyperbolic group

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 12:00 PM Talk 2- Ashot Minasyan

Title: Quasiconvexity of virtual joins and separability of products in relatively hyperbolic groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

2:00 PM → 3:00 PM Talk 3- Emily Stark

Title: Graphically discrete groups and rigidity.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

3:00 PM → 3:30 PM Coffee Break

3:30 PM → 4:30 PM Talk 4 - Kathryn Mann:

Title: Boundary rigidity for hyperbolic groups

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

4:30 PM → 5:30 PM Lightening Talks

Tue, June 21

9:30 AM → 10:30 AM Talk 1 - Harry Petyt

Title: Hyperbolic models for CAT(0) spaces.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 12:00 PM Talk 2- Pallavi Dani

Title: Divergence, thickness, and hypergraph index for Coxeter groups

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

2:00 PM → 3:00 PM Talk 3 - Henry Wilton

Title: Rational curvature invariants of 2-dimensional complexes.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

3:00 PM → 3:30 PM Coffee Break

3:30 PM → 4:30 PM Talk 4 - Tobias Hartnick - ONLINE

Title: The quest for new hyperbolic approximate groups.

4:30 PM → 5:30 PM Talk 5 - Carolyn Abbott - ONLINE

Title: Acylindrically hyperbolic groups and their quasi-isometrically embedded subgroups.

Wed, June 22

9:00 AM → 10:00 AM Talk 1- Alice Kerr

Title: Product set growth in mapping class groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

10:00 AM → 10:30 AM Coffee Break

10:30 AM → 11:30 AM Talk 2 - Matt Durham

Title: The geometry of genericity in mapping class groups and Teichmüller spaces via CAT(0) cube complexes

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

11:30 AM → 12:30 PM Talk 3 - Jean Lecureux

Title: Central Limit Theorem for groups acting on a CAT(0) cubical complex.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

Thu, June 23

9:30 AM → 10:30 AM Talk 1 - Kasia Jankiewicz

Title: Right-angled Artin subgroups of Artin groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 12:00 PM Talk 2- Nir Lazarovich - ONLINE TBC

Title: Volume vs. complexity of hyperbolic groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

2:00 PM → 3:00 PM Talk 3 - Sam Sheperd

Title: Commensurability of lattices in right-angled buildings.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

3:00 PM → 3:30 PM Coffee Break

3:30 PM → 4:30 PM Talk 4 - Simon André

Title: On the Tarski problem for hyperbolic groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

4:30 PM → 5:30 PM Talk 5 - Alessandro Sisto

Title: (Hierarchically) hyperbolic quotients of mapping class groups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

Fri, June 24

9:00 AM → 10:00 AM Talk 1 - Thomas Haettel

Title: Torsion groups and Helly graphs.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

10:00 AM → 10:30 AM Coffee Break

10:30 AM → 11:30 AM Talk 2 - Urs Lang

Title: A combinatorial higher rank hyperbolicity condition.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

11:30 AM → 12:30 PM Talk 3 - Genevieve Walsh

Title: Planar boundaries and parabolic subgroups.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407

2:00 PM → 3:00 PM Talk 4 - Zlil Sela

Title: Automorphisms of groups and a higher rank JSJ decomposition.

At IHP and broadcasting live:
Live section at : https://www.ihp.fr/fr
or
https://omnilive.ihp.fr/player/?m=~5e134b7d65a9611679e03407