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Tuesday Seminar on Topology
Seminar information archive ～11/03｜Next seminar｜Future seminars 11/04～
| Date, time & place | Tuesday 16:00 - 17:30 056Room #056 (Graduate School of Math. Sci. Bldg.) |
|---|---|
| Organizer(s) | IKE Yuichi, KONNO Hokuto, SAKASAI Takuya |
2026/11/17
16:00-17:30 Room #056 (Graduate School of Math. Sci. Bldg.)
Pre-registration required. See our seminar webpage.
Akihiro Takano (Osaka University)
On the cactus Thompson group (JAPANESE)
https://park.itc.u-tokyo.ac.jp/MSF/topology/TuesdaySeminar/index_e.html
Pre-registration required. See our seminar webpage.
Akihiro Takano (Osaka University)
On the cactus Thompson group (JAPANESE)
[ Abstract ]
Inspired by Brin's construction of the braided Thompson group, Witzel and Zaremsky introduced cloning systems as a framework for constructing generalized Thompson groups. In particular, the cloning system on cactus groups gives rise to the cactus Thompson group. In this talk, I will introduce this group and discuss our results on its presentations, abelianization, and word length. This is joint work with Yuya Kodama (Kagoshima University).
[ Reference URL ]Inspired by Brin's construction of the braided Thompson group, Witzel and Zaremsky introduced cloning systems as a framework for constructing generalized Thompson groups. In particular, the cloning system on cactus groups gives rise to the cactus Thompson group. In this talk, I will introduce this group and discuss our results on its presentations, abelianization, and word length. This is joint work with Yuya Kodama (Kagoshima University).
https://park.itc.u-tokyo.ac.jp/MSF/topology/TuesdaySeminar/index_e.html
