群論と代数構造と不変量 - 2026/8/11の論文11本

arXiv math.GRの新着論文11本をご紹介します。番組ページ: https://prepridondon.nyoho.jp/channels/math-gr/episodes/2026-08-11/Presentations of the cactus Thompson groupVanishing of $\ell^2$-Betti numbers for inner amenable groupsNormal-Core Compression for Units in Burnside RingsThe conjugacy problem in cyclic extensions of one-ended hyperbolic groupsDetecting solvability, supersolvability and CLT properties via an invariant based on conjugacy classes of subgroupsAn observation on factorizations of finite groupsCommuting Graph of Unitriangular Group UT(4; p)From algebraic orthogonality to RAAG embedding obstructions in hierarchically hyperbolic groupsRelative Property (T), simplices of invariant measures, and existentially closed modelsType Annihilation for Classifying Maps of Rack SpacesThe Mathieu group $M_{23}$ is a Galois group over $\mathbb{Q}$