This workshop constitutes a weeklong retreat with talks, given by workshop participants, and organized discussions in the mornings and evenings; afternoons will be kept clear for informal discussions and collaboration. In 2019, Morrison-Walker-Wedrich introduced skein invariants for 4-manifolds by leveraging the functoriality of gl(N) Khovanov-Rozansky homology.

In this workshop, students will work through background material and conclude by understanding Ren-Willis' application of these skein modules to the detection of exotics pairs of 4-manifolds. Major background topics include Bar-Natan's interpretation of Khovanov homology, Lee homology, Rasmussen's s-invariant, and Manolescu-Neithalath's 2-handle formula.
The workshop will be led by Qiuyu Ren and Mike Willis.
The organizers are Jennifer Brown, Benjamin Haïoun, David Jordan, Patrick Kinnear and Iordanis Romaidis. 

Participant List:
Soheil Azarpendar
Chun-Yu Bai
Julia Bierent
Tudor-Ioan Caba
Andraž Čepič
Max Demirdilek
Aditya  Dwivedi
Alex Epelde
Livio Ferretti
Tyler Franke
Dominik Gdesz
Juan Ramón Gómez García
Alexis Guérin
Sebastian Halbig
Alea Hofstetter
John Huerta
Amey  Joshi
Mateusz Kujawski
Ayodeji Lindblad
Hanming Liu
Tomas Mejia Gomez
Benjamin  Morris
Ali Ramsey
Karim Ritter von Merkl
Max-Niklas Steffen
Luuk Stehouwer
Filippos  Sytilidis
Matthias  Vancraeynest
Mira Wattal
Maartje Wisse
Yicheng Yang