仭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丆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丆13:30--16:00
	Yuya Koda (Hiroshima University)
	Arc complexes, sphere complexes and Goeritz groups

仭2014

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

仭2013

	11 June. 2013 丂Seminar Room, Bld 12丂
	10:30 - 15:30  Mr. Naoki Sakata (Hiroshima University)
	Canonical decompositions of hyperbolic fibered two-bridge link complements

仭2011

	23 Nov. 2011 丂L1216丂
	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

仭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

仭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

仭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

仭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

仭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

仭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)
	丂丂丂丂丂丂     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

仭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

仭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

仭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.