## トポロジー火曜セミナー

開催情報 火曜日　17:00～18:30　数理科学研究科棟(駒場) 056号室 河野 俊丈, 河澄 響矢, 北山 貴裕, 逆井卓也 http://park.itc.u-tokyo.ac.jp/MSF/topology/TuesdaySeminar/index.html Tea: 16:30 - 17:00 コモンルーム

### 2020年04月14日(火)

17:00-18:30   数理科学研究科棟(駒場) 056号室
５月以降に延期
Daniel Matei 氏 (IMAR Bucharest)
Homology of right-angled Artin kernels (ENGLISH)
[ 講演概要 ]
The right-angled Artin groups $A(G)$ are the finitely presented groups associated to a finite simplicial graph $G=(V,E)$, which are generated by the vertices $V$ satisfying commutator relations $vw=wv$ for every edge $vw$ in $E$. An Artin kernel $N_h(G)$ is defined by an epimorphism $h$ of $A(G )$ onto the integers. In this talk, we discuss the module structure over the Laurent polynomial ring of the homology groups of $N_h(G)$.