Talks
2023
Fukuoka University Differential Geometry Seminar
Topology of nerves of Coxeter systems and growth rates
Fukuoka University, June 15MSJ Spring Meeting 2023
On nerves and growth rates of 2-dimensional Coxeter systems
Chuo University, March 17Riemann Surfaces and Discontinuous Groups 2022
Euler characteristics of nerves of Coxeter systems and growth rates
Tokyo Institute of Technology (Hybrid), February 16
2022
The 6th Workshop on Geometric Group Theory
On the growth rate of Coxeter system, Salem number, and Pisot number
Ehime University, October 27Complex Analysis Seminar at Tokodai
Euler characteristics of 2-dimensional Coxeter systems and the arithmetic properties of their growth rates
Tokyo Institute of Technology (Hybrid), October 14Hyperbolic Geometry and Geometric Group Theory Seminar at Waseda
Combinatorics of nerves of Coxeter systems and arithmetic properties of their growth rates
Waseda University (Hybrid), October 7Prossimi seminari del Dipartimento di matematica
Arithmetic nature and continuity of growth rates of Coxeter systems
University of Bologna, September 1N-KOOK seminar
Deformation of hyperbolic polytopes and the space of Coxeter systems
Online, May 14
2021
Nara hyperbolic geometry seminar
Topology of the space of Coxeter systems and growth rates
Osaka City University (Hybrid), December 5World of Group Craft
Growth rates and spectral radii of Coxeter groups
Online, August 25RIMS Workshop Geometry of discrete groups and hyperbolic spaces
Local rigidity of right-angled Coxeter groups in hyperbolic 5-space
Online, June 4MSJ Spring Meeting 2021
Continuity of the growth rates of Coxeter groups
Online, March 17MSJ Spring Meeting 2021
Locally rigid hyperbolic reflection groups of infinite covolume in dimension 5
Online, March 15Riemann Surfaces and Discontinuous Groups 2020
Convergent sequences of Coxeter groups and its growth rates
Online, March 9
2020
Hyperbolic Geometry and Geometric Group Theory Seminar at Waseda
On the space of Coxeter groups and the continuity of their growth rates
Online, December 18Function Theory Symposium
Rigidity of hyperbolic reflection groups in dimension 4 and 5
Online, November 21Geometric Group Theory in East Asia
Continuity of the growth rate on the space of Coxeter groups
Online, November 6
2019
Topology and Computer 2019
Local rigidity of hyperbolic right-angled Coxeter groups in dimension 4 and 5
Osaka City University, October 19ToKoDai Topology Seminar
On the growth rates and spectral radii of hyperbolic reflection groups
Tokyo Institute of Technology, October 16Workshop Hyperbolic Geometry
Deformation of 4-dimensional right-angled hyperbolic Coxeter groups
Waseda University, September 2MSJ Spring Meeting 2019
Hyperbolic 4-manifolds constructed from a Napier cycle
Tokyo Institute of Technology, March 19Oberseminar Geometrie
A new example of hyperbolic Dehn filling in dimension 4
University of Fribourg, March 6Riemann Surfaces and Discontinuous Groups 2018
Deformation of a hyperbolic polytope and a manifold in dimension 4
Waseda University, February 10
2018
MSJ Spring Meeting 2018
Construction of infinite series of ideal hyperbolic Coxeter 4-polytopes whose growth rates are Perron numbers
The University of Tokyo, March 18The 14th Mathematics Conference for Young Researchers
Construction of ideal hyperbolic 4-polytopes and their growth rates
Hokkaido University, March 1MathSci Freshman Seminar 2018
Construction of infinite series of ideal hyperbolic Coxeter 4-polytopes
Kyoto University, February 14
2017
Seminar for graduate students at Osaka City University
On the growth of hyperbolic Coxeter polytopes
Osaka City University, December 22Complex Analysis Seminar at Tokodai
On the growth of an infinite sequence of ideal hyperbolic Coxeter 4-polytopes
Tokyo Institute of Technology, November 1Hyperbolic Geometry and Geometric Group Theory Seminar at Waseda
Arithmetic properties of growth rates of hyperbolic Coxeter polytopes
Waseda University, October 27Cross-disciplinary seminar for young scientists at Waseda
Realizability of hyperbolic 4-polytopes and arithmetic nature of their growth rates
Waseda University, March 31
2016
Workshop Growth 3
On the growth of 3-dimensional hyperbolic Coxeter groups
Waseda University, April 1MSJ Spring Meeting 2016
On the growth rate of cofinite Coxeter groups in hyperbolic 3-space
University of Tsukuba, March18Riemann Surfaces and Discontinuous Groups 2015
On the arithmetic property of the growth rate of 3-dimensional hyperbolic Coxeter groups
Tokyo Institute of Technology, February 14
2015
Complex Analysis Seminar at Tokodai
On the growth of 3-dimensional hyperbolic Coxeter groups
Tokyo Institute of Technology, December 9Workshop 2015 on Mathematics and Mathematical Education
Growth rates of hyperbolic Coxeter polytopes
Nara University of Education, August 30Geometry and Analysis of Discrete Groups and Hyperbolic Spaces
On the growth of cofinite hyperbolic Coxeter groups in hyperbolic 3-space
RIMS, Kyoto University, June 24MSJ Spring Meeting 2015
Classification of hyperbolic Coxeter polytopes with 6 faces and their growth rates
Meiji University, March 21
2014
Workshop 2014 on Mathematics and Mathematical Education
Quantization of 2-dimensional Lie algebras and representation theory
Nara University of Education, September 14