Irrationality proofs for zeta values, moduli spaces and dinner parties
Brown, F
Moscow Journal of Combinatorics and Number Theory
volume 6
issue 2-3
102-165
(01 Jan 2016)
Positive geometries and canonical forms via mixed Hodge theory
Brown, F
Dupont, C
Communications in Mathematical Physics
volume 406
issue 11
(03 Oct 2025)
doi:10.1007/s00220-025-05399-y
Characterising the Inductive Biases of Neural Networks on Boolean Data
Mingard, C
Seier, L
Göring, N
Badelita, A
London, C
Louis, A
(29 May 2025)
doi:10.48550/arxiv.2505.24060
Quark masses and mixing in string-inspired models
Constantin, A
Fraser-Taliente, C
Harvey, T
Leung, L
Lukas, A
Journal of High Energy Physics
volume 2025
issue 6
(18 Jun 2025)
doi:10.1007/jhep06(2025)175
Strong Convergence to Operator-valued Semicirculars
Pi, J
Jekel, D
Nelson, B
Lee, Y
(24 Jun 2025)
doi:10.48550/arXiv.2506.19940
Embeddings into the ultrapower of the Jiang-Su algebra
Pi, J
Bouwen, B
(13 Jun 2025)
doi:10.48550/arXiv.2506.11983
Frequency synchronization induced by frequency detuning
Ocampo-Espindola, J
Bick, C
Motter, A
Kiss, I
Science Advances
volume 11
issue 24
eadu4114
(13 Jun 2025)
doi:10.1126/sciadv.adu4114
Community detection on directed networks with missing edges
Pedreschi, N
Lambiotte, R
Bovet, A
Journal of Physics: Complexity
volume 6
issue 2
(26 Jun 2025)
doi:10.1088/2632-072x/ade5e4
Lifting couplings in Wasserstein spaces
Perrone, P
Compositionality
volume Volume 7 (2025)
(07 May 2025)
doi:10.46298/compositionality-7-2
Wed, 25 Jun 2025
15:00
15:00
Boundary cubulation is a pathway to residual finiteness
Thomas Ng
(Brandeis University)
Abstract
Actions on CAT(0) cube complexes are powerful geometric tool for both algebraically decomposing groups and establishing subgroup separability results. I will describe boundaries associated to hyperbolic and relatively hyperbolic groups. With a focus on (quotients of) free products, I will discuss variations on a boundary criteria of Bergeron—Wise for exhibiting cocompact actions on CAT(0) cube complexes. I will explain some ideas on how to use these tools to show that most (small-cancellation or random density) quotients of free products preserve residual finiteness. This is based on multiple joint works with subsets of Einstein, Krishna MS, Montee, and Steenbock.