Principal frequency of clamped plates on RCD(0,N) spaces: sharpness, rigidity and stability
 Kristály, A Mondino, A (06 Sep 2024) doi:10.48550/arxiv.2409.04337
SignedLouvain: Louvain for signed networks.
 Pougué-Biyong, J Lambiotte, R CoRR volume abs/2407.19288 (01 Jan 2024)

Song of the Week: Big Star - Way Out West

This song starts as if they are making up as they go along. Which in Big Star's case probably wasn't a million miles from the truth. But wait for the chorus.

Big Star did it all. Made unfashionable music at the wrong time, sold no records, self-destructed and influenced generations of subsequent bands. As they sing: "Love me, we can work out the rest".

Detection of anomalous spatio-temporal patterns of app traffic in response to catastrophic events
 Medina, S Babul, S Sahasrabuddhe, R LaRock, T Lambiotte, R Pedreschi, N (02 Sep 2024) doi:10.48550/arxiv.2409.01355
Using Shortened Spin‐Ups to Speed Up Ocean Biogeochemical Model Optimization
 Oliver, S Khatiwala, S Cartis, C Ward, B Kriest, I Journal of Advances in Modelling Earth Systems volume 16 issue 9 (10 Sep 2024) doi:10.1029/2023ms003941
Mon, 04 Nov 2024
15:30
L5

Zariski closures of linear reflection groups

Sami Douba
(IHES)
Abstract

We show that linear reflection groups in the sense of Vinberg are often Zariski dense in PGL(n). Among the applications are examples of low-dimensional closed hyperbolic manifolds whose fundamental groups virtually embed as Zariski-dense subgroups of SL(n,Z), as well as some one-ended Zariski-dense subgroups of SL(n,Z) that are finitely generated but infinitely presented, for all sufficiently large n. This is joint work with Jacques Audibert, Gye-Seon Lee, and Ludovic Marquis.

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