Norddeutsches Gruppentheorie-Kolloquium 2022

13-15 October 2022
Heinrich-Heine-Universität Düsseldorf

Speakers

Sebastian Bischof (Gießen)
Ilaria Castellano (Bielefeld)
María Cumplido Cabello (Seville)
Gustavo A. Fernández Alcober (Bilbao)
Oihana Garaialde Ocaña (Bilbao)
Alejandra Garrido (Madrid)
Ellen Henke (Dresden)
Steffen Kionke (Hagen)

Lucia Morotti (Düsseldorf)
Eduard Schesler (Hagen)
Patrick Serwene (Dresden)
Ilir Snopche (Rio de Janeiro)
Pablo Spiga (Milano)
Christopher Voll (Bielefeld)
Torben Wiedemann (Gießen)

Schedule Poster Registration Contact Maps and directions

After two scaled-down online editions, we are again aiming for an in-person edition of the NDGK. As a bonus, the classic Fr-Sa NDGK-format is enriched by additional Th-Fr activities, which are primarily aimed at doctoral and postdoctoral researchers and which are hosted in cooperation with the local Research Training Group GRK 2240.

Pictures

Speakers

      - Steffen Kionke 1 2                                
      - Lucia Morotti 1 2
      - Eduard Schesler 1 2
      - Ilaria Castellano 1 2
      - Christopher Voll 1 2
      - Ellen Henke 1 2
      - Alejandra Garrido 1 2
      - Pablo Spiga 1 2
      - Patrick Serwene 1 2
      - Ilir Snopche 1 2
      - Torben Wiedermann 1 2
      - Sebastian Bischof 1 2
      - María Cumplido Cabello 1 2
      - Oihana Garaialde Ocaña 1 2

Social dinner

      - Picture 1                                           
      - Picture 2
      - Picture 3
      - Picture 4
      - Picture 5
      - Picture 6
      - Picture 7

Other pictures

      - Group picture
      - Fail group picture
      - Registration
      - Organisation 1
      - Organisation 2
      - Pre-talk 1
      - Pre-talk 2
      - Teamwork
      - Coffee break 1
      - Coffee break 2
      - Audience 1
      - Audience 2
      - Audience 3
      - Audience 4

Schedule

The `bonus' part of the meeting commences on Thursday, 13 October, at 2.30pm and ends on Friday, 14 October, at about 12.30pm. The `classic' part starts on Friday, 14 October, at 2.30pm and ends on Saturday, 15 October, at about 1.15pm.

The talks take place in Lecture Halls 5E and 5F as indicated below.

Thursday, 13 October 2022
14:00 – 14:30	Welcome and registration (in 25.22.00.53)
14:30 – 15:30	Steffen Kionke Upper bounds for the first L²-Betti number of groups	5F
- Coffee/Tea Break (in 25.22.00.53) -
16:00 – 17:00	Lucia Morotti Decomposition of 2-parts spin representations of symmetric groups	5F
17:15 – 18:15	Eduard Schesler Extending branch groups to simple groups and beyond	5F

Friday, 14 October 2022
09:30 – 10:30	Ilaria Castellano A pro-p version of Sela's accessibility	5F
- Coffee/Tea Break (in 25.22.00.53) -
11:00 – 12:30	Christopher Voll Subgroup growth meets combinatorial geometry	5F
- Lunch Break -
14:00 – 14:30	Welcome and registration (in 25.22.00.53)
14:30 – 15:10	Ellen Henke Fusion systems, localities and the classification of finite simple groups	5E
15:20 – 16:00	Alejandra Garrido Detecting free factors in profinite completions	5E
- Coffee/Tea Break (in 25.22.00.53) -
16:30 – 17:10	Pablo Spiga Normal 2-coverings of finite groups	5E
17:20 – 18:00	Patrick Serwene Exotic and block-exotic fusion systems	5E
- Dinner -

Saturday, 15 October 2022
09:00 – 09:40	Ilir Snopche Test elements and retracts in groups	5F
09:50 – 10:20	Torben Wiedemann Root graded groups	5F
10:30 – 11:00	Sebastian Bischof Groups of Kac-Moody type over F₂	5F
- Coffee/Tea Break (in 25.22.00.53) -
11:30 – 12:10	María Cumplido Cabello A first algorithm to solve the word problem for 3-free Artin groups	5F
12:20 – 13:00	Oihana Garaialde Ocaña On the cohomology of groups	5F

Unfortunately the talk of G. A. Fernández-Alcober had to be cancelled.

Abstracts

Abstracts (pdf).

Poster

NDGK2022 poster (pdf). Download before printing.

Participants

List of participants (pdf).

Registration

The registration is closed!

Contact

The organisers can be reached by email via this NDGK2022 address.

Maps and directions

To find your way to/on the HHU campus, you may find helpful the instructions and maps provided by the university.