Yuichi Kabaya

• English
• Japanese

2019

• • 18-20 October 2019
  • Topology and Computer 2019
  • Osaka City University
  • "Visualizing deformations of complex projective structures"
  • • slides (3.2MB)

2018

• • 29 October - 1 November 2018
  • Topology and Geometry of Low-dimensional Manifolds
  • Nara Women's University
  • "Deformation of ideal octahedra and quasi-Fuchsian once-punctured torus groups"

2017

• • 23-26 November 2017
  • Rigidity School, Nagoya 2017
  • Nagoya University
  • "Kazhdan constants and semidefinite programming"

2016

• • 28-30 October 2016
  • Topology and Computer 2016
  • Akita, Japan
  • "Optimal Kazhdan constants and semidefinite programming"

2015

• • 27-30 October 2015
  • Topology and Geometry of Low-dimensional Manifolds
  • Nara Women's University
  • "Exotic components in linear slices of quasi-Fuchsian groups"
• • 22-26 June 2015
  • Geometry and Analysis of Discrete Groups and Hyperbolic Spaces
  • RIMS, Kyoto University
  • "Exotic components in linear slices of quasi-Fuchsian groups"
• • 11 March 2015
  • National University of Singapore
  • "Exotic components in linear slices of quasi-Fuchsian groups"
• • 14-16 February 2015
  • 「リーマン面・不連続群論」研究集会 (Riemann surfaces and Discontinuous groups)
  • Nakanoshima Osaka
  • "Exotic components in linear slices of quasi-Fuchsian groups"
  • • slides (5.7MB)

2014

• • 10-14 November 2014
  • Geometric Structures and Representation Varieties
  • KIAS, Seoul
  • "Exotic components in linear slices of quasi-Fuchsian groups"
  • Related materials and pictures (prepared for a poster presentation below)
• • 17-20 September 2014
  • Quantum Topology and Physics 2014 in Fukuoka
  • Nishijin Plaza, Fukuoka, Japan
  • "Quandle cocycles from group cocycles"
  • • slides
• • 28 March - 1 May 2014
  • NII Shonan Meeting: Knot theory: Algorithms, complexity and computation
  • Shonan Village Center, Hayama, JAPAN
  • "Exotic components in linear slices of quasi-Fuchsian groups"
• • 6-10 January 2014
  • Rigidity School, Tokyo 2013/2014
  • University of Tokyo
  • "Parametrization of PGL(n,C)-representations of surface groups"

2013

• • 29 November - 1 December 2013
  • Topology and Computer 2013
  • Meiji University, Nakano Campus, Tokyo
  • "Bending deformation of quasi-Fuchsian groups"
  • • slides (2.6MB)
• • 26 March 2013
  • Seminar at KIAS, Seoul
  • "Parametrization of PGL(n,C)-representations of surface groups"
• • 12-14 January 2013
  • Riemann surfaces and Discontinuous groups 2013
  • Osaka University
  • "Parametrization of PGL(n,C)-representations of surface groups"

2012

• • 1-4 September 2012
  • Workshop on Riemann surfaces
  • University of Tokyo
  • "Parametrization of PSL(2,C)-representations of surface groups"
• • 28 May - 1 June 2012
  • RIMS Seminar: Representation spaces, twisted topological invariants and geometric structures of 3-manifolds
  • Hakone, Japan
  • "Parametrization of PSL(n, C)-representations of surface groups I, II"
  • • slides 1
    • slides 2
    • proceedings (RIMS kokyuroku 1836 p. 34 - 44) (kokyuroku 1836)
• • 1 March 2012
  • Post-doc Seminar, Geometry and analysis of surface group representations
  • IHP, Paris
  • "Parametrization of PSL(2,C)-representations of surface groups"

2011

• • 5-9 December 2011
  • East Asian Conference on Algebraic Topology
  • University of Tokyo
  • "Quandle homology and group homology"
  • • slides

2010

• • 21-23 November 2010
  • 53th symposium on function theory
  • Nagoya
  • "PSL(2,C)-representations via triangulations in dimension 2 and 3"
  • • slides
    • abstract
• • 2-4 June 2010
  • Intelligence of Low-dimensional Topology
  • RIMS Kyoto University
  • "Quandle cocycles from group cocycles"
  • • slides
    • proceedings
• • 8-11 March 2010
  • Branched Coverings, Degenerations, and Related Topics 2010
  • Hiroshima University
  • "The volume and the Chern-Simons invariant of a PSL(2,C)-representation and quandle homology"
  • • slides
• • 15-17 February 2010
  • Workshop: Mapping class groups, TQFT and invariants of 3-manifolds
  • Tokyo Institute of Technology
  • "Quandle homology, hyperbolic volume and Chern-Simons invariant"
• • 14-16 January 2010
  • Volume conjecture
  • Waseda University
  • "The volume and the Chern-Simons invariant of a PSL(2,C)-representation and quandle homology"
  • • slides

2009

• • 31 August-2 September 2009
  • Topology and Computer 2009
  • Tokyo Institute of Technology
  • "JSJ decompositions of toroidal 3-manifolds obtained by Dehn surgeries on pretzel knots (with K. Ichihara)"
  • • slides
• • 17-20 March 2009
  • Low dimensional topology and number theory
  • Fukuoka Japan
  • "A method for finding ideal points from an ideal triangulation and its application"
  • • slides

2008

• • 6-9 August 2008
  • Topology Symposium
  • Kanazawa Japan
  • "Finding ideal points from an ideal triangulation"

2007

• • 10-14 December 2007
  • Analysis and Topology of Discrete Groups and Hyperbolic Spaces
  • RIMS Kyoto University
  • "Finding ideal points of the PSL(2,C)-character varieties of 3-manifolds from ideal triangulations"

2006

• • 4-8 December 2006
  • Topology, Complex Analysis and Arithmetic of Hyperbolic Spaces
  • RIMS Kyoto University
  • "Pre-Bloch invariants of 3-manifolds with boundary"