Facultad de Ingeniería, Universidad de la República
IMERL
IFUMI
CMAT, UdelaR-FCIEN
Math AmSud

Workshop on group dynamics

Montevideo, Uruguay · October 5–9, 2026

Venue: IMERL, Facultad de Ingeniería, Universidad de la República
Organizers: Juan Alonso, Joaquín Brum, Nancy Guelman, Nicolás Matte Bon, Cristóbal Rivas, Michele Triestino
Facultad de Ingeniería, Universidad de la República, Montevideo
Facultad de Ingeniería, Universidad de la República, Montevideo.

Program

Mini-course Research talk Coffee break Lunch break Group therapy

Hover over a mini-course or research talk to see its abstract; click to keep it open.

Monday 5
09:00–10:00 Triestino–Carnevale I On Möbius-like groups of circle homeomorphisms
10:00–10:25 Coffee break
10:25–11:25 Maximiliano Escayola I Exceptional diffeomorphisms of the circle
11:25–12:55 Lunch break
12:55–13:40 Franco Gómez Dinámica 1-dimensional de los grupos Baumslag-Solitar
13:50–14:35 Leon Carvajales Some deformation invariants of Anosov surface groups in SL_3(R)
14:35–15:00 Coffee break
15:00–15:45 Santiago Radi Proportion of periodic points in reduction of rational maps
Tuesday 6
09:00–10:00 Triestino–Carnevale II On Möbius-like groups of circle homeomorphisms
10:00–10:25 Coffee break
10:25–11:25 Maximiliano Escayola II Exceptional diffeomorphisms of the circle
11:25–12:55 Lunch break
12:55–13:55 Paulina Cecchi I Monotilings en grupos promediables
14:05–15:05 Sebastián Barbieri I Universalidad de los subshift de tipo finito para grupos
Wednesday 7
09:00–10:00 Triestino–Carnevale III On Möbius-like groups of circle homeomorphisms
10:00–10:25 Coffee break
10:25–11:25 Maximiliano Escayola III Exceptional diffeomorphisms of the circle
11:35–12:20 Matilde Martínez TBA
12:20–13:50 Lunch break
13:50–17:00 Group therapy
Thursday 8
09:00–10:00 Paulina Cecchi II Monotilings en grupos promediables
10:00–10:25 Coffee break
10:25–11:25 Sebastián Barbieri II Universalidad de los subshift de tipo finito para grupos
11:25–12:55 Lunch break
12:55–13:40 Emir Molina Borel Complexity of the Conjugacy Orbit Equivalence of Nilpotent Groups on their Space of Orders
13:40–14:25 Marcos Barrios TBA
14:25–14:50 Coffee break
15:00–15:45 Théo Virot Subgroup Distortion in Thompson’s groups
Friday 9
09:00–10:00 Sebastián Barbieri III Universalidad de los subshift de tipo finito para grupos
10:00–10:25 Coffee break
10:25–11:25 Paulina Cecchi III Monotilings en grupos promediables
11:25–13:20 Lunch break
13:20–14:05 Martin Gilabert Stationary boundaries on the space of amenable subgroups.
14:05–14:30 Coffee break
14:30–15:15 Jérôme Los New Piecewise Linear representations of surface groups in Homeo(S¹)

Course materials

Venue

The workshop will be held at IMERL, Facultad de Ingeniería, Universidad de la República, Montevideo, Uruguay.

Participants whose accommodation is provided by the organization will stay at Punta Trouville Hotel, Francisco Vidal 726, Punta Carretas, Montevideo.

Food tips

Lunch

  • Sumi Sushi — sushi. ≈ US$10–15.
  • Cantina y Patria — lunch. ≈ US$10–15.
  • Facultad de Ingeniería cafeteria — simple lunch. ≈ UYU 280 (US$7).
  • Rodelú — traditional Uruguayan food. ≈ US$10–20.

Dinner

  • La Pulpería — traditional parrillada. ≈ US$15–25.
  • La Otra — parrillada. ≈ US$25–35.
  • De Morondanga — good for sharing tapas. ≈ US$15–20.
  • La Giraldita — traditional Uruguayan food. ≈ US$10–15.
  • Mercado Williman — food hall with many options. ≈ US$10–20.
  • Marbella — pizza and fainá; non-zero probability of running into a mathematician. ≈ US$10–15.

Speakers

Minicourse speakers

  • Sebastián Barbieri (Universidad de Chile, Chile) — Universalidad de los subshift de tipo finito para grupos
  • João Carnevale (Universidad Federal do Rio, Brazil) and Michele Triestino (Universidad de Marsella, France) — On Möbius-like groups of circle homeomorphisms
  • Paulina Cecchi (Universidad de Chile, Chile) — Monotilings en grupos promediables
  • Maximiliano Escayola (KIAS, Korea) — Exceptional diffeomorphisms of the circle

Talk speakers

  • Marcos Barrios (UdelaR, Uruguay) — TBA
  • Leon Carvajales (IESTA, UdelaR, Uruguay) — Some deformation invariants of Anosov surface groups in SL_3(R)
  • Matilde Martínez — TBA
  • Martin Gilabert (Université de Rennes, France) — Stationary boundaries on the space of amenable subgroups.
  • Franco Gómez (Universidad de Chile, Chile) — Dinámica 1-dimensional de los grupos Baumslag-Solitar
  • Jérôme Los (Universidad de Marsella, France) — New Piecewise Linear representations of surface groups in Homeo(S¹)
  • Emir Molina (Universidad de Chile, Chile) — Borel Complexity of the Conjugacy Orbit Equivalence of Nilpotent Groups on their Space of Orders
  • Santiago Radi (UdelaR, Uruguay) — Proportion of periodic points in reduction of rational maps
  • Théo Virot — Subgroup Distortion in Thompson’s groups

Participants

  • Juan Alonso
  • Marcos Barrios
  • Sebastián Barbieri
  • Nicolás Bitar
  • Joaquín Brum
  • João Carnevale
  • Leon Carvajales
  • Paulina Cecchi
  • María Isabel Cortez
  • Maximiliano Escayola
  • Martin Gilabert
  • Franco Gómez
  • Nancy Guelman
  • KyeongRo Kim
  • Jérôme Los
  • Emir Molina
  • Juan Morelli
  • Javier Pavez
  • Luis Piñeyrua
  • Matilde Martínez
  • Santiago Radi
  • Cristóbal Rivas
  • Michele Triestino
  • Théo Virot

Sponsors and supporting institutions

Facultad de Ingeniería, Universidad de la República
IMERL
IFUMI
Centro de Matemática, Facultad de Ciencias, Universidad de la República
Math AmSud

Contact

For inquiries, please contact joaquinbrum@gmail.com