■2017

7, February (Tue)
13:40--14:20
Toshio Sato (Joetsu University of Education)
Knots in the solid torus
14:40--15:20
Takuji Nakamura (Osaka Electro-Communication University)
A note on 3-colored knot diagrams
15:40--16:20
Ryosuke Yamamoto (Gunma University)
Simpleness of closed curves on a surface and the lower central series of the fundamental group of the surface
16:40--17:20
Ippei Ishii
(1,1) knots and their 2-fold branched coverings
17:40--18:20
Yuta Nozaki (The University of Tokyo)
Homology cobordisms over a surface of genus one and lens spaces
18:40--19:40
Problem session

31, July (Fri)
10:30--12:00，13:30--16:00
Yuya Koda (Hiroshima University)
Arc complexes, sphere complexes and Goeritz groups

2, December (Wed)
16:00--18:00
Fabiola Manjarrez Guti?rrez (Universidad Nacional Autonoma de Mexico (UNAM))
Genus two knots which admit a (1,1)-decomposition

31, July (Fri)
10:30--12:00，13:30--16:00
Yuya Koda (Hiroshima University)
Arc complexes, sphere complexes and Goeritz groups

■2014

6, June (Fri)
15:00--
Nao Imoto (Nara Women's University)
On monodromy of rationally homologically fiber surface

■2013

11 June. 2013 　Seminar Room, Bld 12　

  10:30 - 15:30  Mr. Naoki Sakata (Hiroshima University)
                       Canonical decompositions of hyperbolic fibered two-bridge link complements

■2011

23 Nov. 2011 　L1216　

  13:30 - 14:30  Prof. Ryosuke Yamamoto (Gunma University)
                      On the construction of invariants for open book decompositions
  14:50 - 15:50  Prof. Toshio Saito (Joetsu University of Education)
                      Connected sums of knots and 2-string free tangles
  16:10 - 17:10  Prof. Takuji Nakamura (Osaka Electro-Communication University)
                      Non-identical twin groups of virtual knot

24 Jan. 2011 ; L1212(morning), L1217(afternoon)
  10:30 -- 12:00  Prof. Kunio Murasugi (Univ. Toronto)
                            Boundedness of zeros of the Alexander polynomial and its applications
  14:00 -- 15:00  Takahiro Kitayama (Univ.Tokyo)
                            Homology cylinders of higher-order           
  15:30 -- 16:30  Prof. Teruaki Kitano (Soka Univ.)
                            Epimorphisms between 3-manifold groups and some inequalities of topological invariants

■2010

17 Nov. 2010
  Dr. Ayumu Inoue (Tokyo Institute of Technology)
  Quandle homology and complex volume

2 Sep. 2010
  Tetsuya Ito (Univ. Tokyo)
  Bi-ordering of fibered knot groups and twisted Alexander polynomials

30 Jun. 2010
  Dr. Marion Moore (Univ. of California at Davis)
  Alpha-sloped Heegaard splitting

14 Jan. 2010
  Prof. Taehee Kim (Konkuk Univ.)
  The homology cobordism on homology cylinders

■2009

7 Dec. 2009
  Takahiro Kitayama (Univ. Tokyo)
  On metabelian Reidemeister torsion

4 Dec. 2009
  Takefumi Nosaka (RIMS Kyoto Univ.)
  Algebraic calculations of (co) homology of the Alexander quandle over finite fields

26 Nov. 2009
  Eri Hatakenaka (Tokyo Univ. Agriculture & Technology)
  Covering presentations of 3-manifolds and the Turaev-Viro invariant

22 Oct. 2009
  Prof. Takuya Sakasai (Tokyo Institute of Technology)
  The cobordism group of homology cylinders (by Cha, Friedl and Kim)

9 Oct. 2009
  Dr. Kai Ishihara (Saitama Univ.)
  Algorithm for finding parameter of tunnels

30 Jul. 2009
  Takahiro Kitayama (Univ. Tokyo)
  Non-commutative Reidemeister torsion and Morse-Novikov theory

■2008

22 Dec. 2008
  Prof. Kokoro Tanaka (Tokyo Gakugei Univ.)
  Khovanov homology II

15 Dec. 2008
  Prof. Kokoro Tanaka (Tokyo Gakugei Univ.)
  Khovanov homology I

1 Dec. 2008
  Takahiro Kitayama (Univ. Tokyo)
  Reidemeister torsion for linear representations and Seifert surgery on knots

17 Sep. 2008
  Prof. Hiroshi Goda (Tokyo Univ. Agriculture & Technology)
  Computations of Knot Floer homology and Novikov homology

9 Sep. 2008
  Dr. Motoo Tange (Kyoto Univ.)
  Sutured Floer homology and its applications

20 Aug. 2008
  13:00 - 14:30  Prof. Takuji Nakamura (Osaka Electro-Communication Univ.)
                          Delta-unknotting numbers for positive knots and almost positive knots
  14:45 - 16:15  Dr. Ryosuke Yamamoto (Osaka City Univ.)
                        Complexity of open book decompositions via arc complex
16:30 - 18:00  Dr. Toshio Saito (Nara Women's Univ.)
                        Knots yielding homeomorphic lens spaces by Dehn surgery
18:15 - 19:45  Problem Session

17 Mar. 2008
  15:00 - 15:50  Prof. Katsuya Mashimo (Tokyo Univ. Agriculture & Technology)
                          From vector analysis to Grassmannian geometry
  16:10 - 17:00  Prof. Kunio Yamagata (Tokyo Univ. Agriculture & Technology)
                        From linear algebra to representation of algebra

■2008

26 Nov. 2007
  Takahiro Kitayama (Univ. Tokyo)
  Symmetry of twisted Alexander invariants on SU(2)-representation spaces

27 Oct. 2007
  Prof. Kunio Murasugi (Univ. Toronto)
  The twisted Alexander polynomial of 2-bridge knots

15 Oct. 2007
  Dr. Yoshikazu Yamaguchi (Univ. Tokyo)
  On the geometry of a slice of the character variety of a knot group      

1 Oct. 2007
  Dr. Takuya Sakasai (Univ. Tokyo)
  Genus invariants of 3-manifolds related to homology cobordisms of surfaces    

23 Mar. 2007
  Prof. Tomoyuki Wada (Tokyo Univ. Agriculture & Technology)
  The origin of representation theory of groups

20 Mar. 2007
  Dr. Fumikazu Nagasato (Tokyo Institute of Technology)
  On a reduced Kauffman bracket skein module and its properties              

22 Jan. 2007
  Takahiro Kitayama (Univ. Tokyo)
  Refinement of twisted Alexander invariants and sign-deteremined Reidemeister torsions

■2006

20 Oct. 2006
  Yoshikazu Yamaguchi (Univ. Tokyo)
  On the twisted Reidemeister torsion of the complements of twist knots

25 Aug. 2006
  13:00 - 14:00  Dr. Toshio Saito (Nara Women's Univ.)
                          Destabilizing Heegaard splittings of knot exteriors
  14:10 - 15:10  Kai Ishihara (Saitama Univ.)
                        Heegaard splittings of link exteriors
15:40 - 16:40  Prof. Takuji Nakamura (Osaka Electro-Communication Univ.)
16:50 - 17:50  Dr. Ryosuke Yamamoto (Osaka City Univ.)
                        Overtwisted open books and Stallings twist

26 May. 2006
  Dr. Takuya Sakasai (Univ. Tokyo)
  Alexander invariants for homology cobordisms of surfaces

■2005

31 Oct. 2005
  Yoshikazu Yamaguchi (Univ. Tokyo)
  SU(2) Reidemeister torsion for knot complements and twisted Alexander polynomial

25 Jul. 2005
  Yoshikazu Yamaguchi (Univ. Tokyo)
  On a surgery formula along knots of non-abelian Reidemeister torsions

22 Jul. 2005
  13:15 - 14:15  Prof. Izuru Mori (SUNY College, Brockport)
                          Point Modules and Co-point Modules
14:30 - 15:30  Prof. Gordana Todorov (Northeastern Univ. Boston)
　　　　　　     Cluster categories and some related topics
16:00 - 17:00  Prof. Kiyoshi Igusa (Brandeis Univ., Waltham)
                        Axiomatic higher torsion and relation to root systems

27 Jun. 2005
  Yuya Koda (Keio Univ.)
  Heegaard splittings and Reidemeister-Turaev torsion of Euler structure

■2004

23 Jan. 2004
  Dr. Teruhisa Kadokami (Osaka City Univ.)
  Reidemeister torsion of homology lens spaces

16 Jan. 2004
  Dr. Yasuharu Nakae (Univ. Tokyo)
  Taut foliations in torus knot complemets

■2003

4 Apr. 2003
  Dr. Takashi Takamuki (Kyushu Univ.)
  Homological representations of the Birman-Murakami-Wenzl algebra

27 Mar. 2003
  Dr. Hiroshi Matsuda (Univ. Tokyo)
  Knot Floer homology and Heegaard splittings for (1,1)-knots

7 Feb. 2003
  Dr. Masaaki Suzuki (Univ. Tokyo)
  On the Magnus representation of the mapping class group

■2002

20 Dec. 2002
  Dr. Toshifumi Tanaka (Kyushu Univ.)
  An introduction of Kirk-Livingston's papers:
Twisted Alexander invariants, Reidemeister torsion, and Casson-Gordon invariants, Topology 38 (1999), 635-661.
Twisted knot polynomials; inversion, mutation and concordance, Topology 38 (1999), 663-671.