Subfactors and Applications
Organized by D. Bisch, T. Gannon, Y. Kawahigashi and Y. Ogata
July 28-August 1, 2025, Oberwolfach, Germany

Monday, July 28
9:05-9:50 Corey Jones An operator algebraic approach to fusion category symmetry on the lattice
10:00-10:45 Katrin Wendland The symmetries of Kummer-like K3 surfaces within the Mathieu groups
11:00-11:45 Christoph Schweigert Tensor network states, spherical Morita contexts and extruded graphs
11:55-12:25 Catherine Meusburger Geometric formulation of Dijkgraaf-Witten TFT with defects
16:00-16:45 André Henriques Complete W*-categories, and a new notion of adjoint functors
16:55-17:40 Theo Johnson-Freyd and David Reutter Von Neumann algebras are O(2) fixed points ... somehow
17:50-18:20 Sebastiano Carpi Teichmüller modular forms and holomorphic vertex operator algebras
Tuesday, July 29
9:00-9:45 Jeongan Haah A 1d gapped boundary of a chiral theory over a 2d invertible subalgebra
10:05-10:50 David Penneys Boundary algebras and superselection sectors for topologically ordered spin systems
11:10-11:40 Bin Gui Geometry of 2d finite logarithmic chiral CFT
11:50-12:20 Junhwi Lim Planar algebras associated to cocommuting squares
16:00-16:20 Futaba Sato Heat semigroups on quantum automorphism groups of finite dimensional C*-algebras
16:25-16:45 Sven Moeller G-crossed extensions and lattice orbifolds
16:50-17:10 Julio Caceres New hyperfinite subfactors with infinite depth
17:15-17:35 Roberto Hernández Palomares Quantum graphs and spin models
17:40-18:00 Sergio Girón Pacheco Classifying actions of tensor categories on Kirchberg algebras
18:50-18:25 Daniel Wallick Superselection sectors for a poset of von Neumann algebras
Wednesday, July 30
9:00-9:45 Zhengwei Liu Construct subfactors by quantum computers
10:00-10:45 Stefan Hollands Anyonic spin-chains and subfactors
11:00-11:30 Julia Plavnik Exact factorizations and bicrossed product of fusion categories
11:40-12:10 Robert McRae Rigidity for commutative algebras in braided monoidal categories, with applications to vertex operator algebra
Thursday, July 31
9:00-9:45 James Tener A unitary VOA for every conformal net
10:10-10:55 Frank Verstraete Entanglement and bimodule categories in quantum spin systems
11:30-12:15 Gandalf Lechner and Ricardo Correa da Silva Standard Subspaces and Twisted Araki-Woods Subfactors
16:00-16:45 Masaki Izumi Group-subgroup subfactors revisited
16:55-17:40 Pieter Naaijkens Some recent results on superselection sector theory for topologically ordered models
17:50-18:20 Cain Edie-Michell Conformal embedding categories
Friday, August 1
9:00-9:45 Noah Snyder Delannoy planar algebra
10:10-10:55 Makoto Yamashita Witt-triviality of DHR bimodule categories
11:30-12:15 Ingo Runkel Gauging non-invertible symmetries in 3d TFT