20, November (Wed)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-08, 18th floor, Building 51, Nishiwaseda Campus)
　　15:30--16:30
　　Kanako Oshiro (Sophia University)
　　Normalized quandle twisted Alexander invariants (joint work with Atsushi Ishii (University of Tsukuba))

16, October (Wed)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-08, 18th floor, Building 51, Nishiwaseda Campus)
　　15:30--16:30
　　Natsuya Takahashi (Osaka University)
　　
19, July (Fri)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Tatsuro Shimizu (Tokyo Denki University)
　　Reidemeister torsion and an invariant related to the Chern-Simons perturbation theory

5, July (Fri)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Anh Tran (University of Texas at Dallas)
　　Even classical pretzel knots and left orderability

10, May (Fri)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Naoko Wakijo (Tokyo Institute of Technology)
　　Twisted Reidemeister torsions of closed 3-manifolds

19, April (Fri)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Sebastian Baader (University of Bern)
　　Minimal cobordisms between torus knots and large sums of trefoil knots

5, April (Fri)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-06, 18th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Shun Sawabe (Waseda University)
　　On the annihilating polynomials of the colored Jones polynomial for links

6, January (Sat)
　　Held at Tokyo University of Agriculture and Technology (Room L1215, 1st floor, Building 12, Koganei Campus)

　　13:10--13:30
　　Hiroshi Goda (The Tokyo University of Agriculture and Technology)
　　Dehn surgeries which yield lens spaces and genera of knots

　　13:45--14:15
　　Toshio Sato (Joetsu University of Education)
　　Exceptional or half-integral chirally cosmetic surgeries

　　14:30--15:00
　　Takuji Nakamura (Yamanashi University)
　　Notes on virtualized pass moves for virtual knots

　　15:15--15:45
　　Ryosuke Yamamoto (Gunma University)
　　Associating monomial matrices with multi-curves and its applications

　　16:00--16:30
　　Takayuki Morifuji (Keio University)
　　Non-acyclic representations of the figure-eight knot

　　16:45--17:15
　　Masakazu Teragaito (Hiroshima University)
　　
　　17:30--18:30
　　Problem session

4, Dec (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　17:00--18:00
　　Ayaka Ishikawa (Yamagata University)
　　On graph zeta and its determinant representation

30, Oct (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-08, 17th floor, Building 51, Nishiwaseda Campus)
　　17:00--18:00
　　Genki Omori (Shibaura Institure of Technology)
　　A minimal generating set for the quasitoric braid group

5, October (Thu)
　　Held at Tokyo University of Agriculture and Technology (Room L1215, 1st floor, Building 12, Koganei Campus)

　　13:30--14:20
　　Toshio Sato (Joetsu University of Education)
　　Dehn surgery on knots with coil presentation

　　14:40--15:10
　　Takuji Nakamura (Yamanashi University)
　　On virtualized-type local moves for virtual knots

　　15:30--16:00
　　Hiroshi Goda (The Tokyo University of Agriculture and Technology)
　　Arc graph and Gauss diagram

　　16:30--
　　Free presentation
　　Problem session

31, July (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-06, 18th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Hiroaki Karuo (Gakushuin University)
　　A proposal for a positivity conjecture of Roger--Yang skein algebras

19, July (Wed)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-06, 18th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Anh Tran （University of Texas at Dallas）
　　Minimality of rational knots C(2n+1, 2m, 2)

19, June (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-06, 18th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Yuta Nozaki (Yokohama National University)
　　Epimorphisms between knot groups and the twisted Alexander polynomial

29, May (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 18-06, 18th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Atsuhiko Mizusawa (Waseda University)
　　A link-homotopy theory of colored string links and its applications

24, April (Mon)　(Joint seminar with Waseda University)
　　Held at Waseda University (Room 17-06, 17th floor, Building 51, Nishiwaseda Campus)
　　16:00--17:00
　　Naoki Kimura (Waseda University)
　　Rack coloring invariants of Legendrian knots

18, June (Thu) (Zoom seminar)
　　13:30--14:00
　　Hiroshi Goda (The Tokyo University of Agriculture and Technology)
　　TAP and CS

　　14:00--15:00
　　Airi Aso (Tokyo Metropolitan University)
　　A note on the asymptotic behavior of the twisted Alexander polynomials of 5_2 knot

22, March (Fri)
　　13:00--
　　Noboru Ito (The University of Tokyo)
　　Crosscap numbers and volume bounds

21, November (Wed)
　　14:45--14:30
　　Yuta Nozaki (The University of Tokyo)
　　An infinite family of homologically fibered knots of the same genus

　　14:45--15:45
　　Takayuki Okuda (Tokyo University of Agriculture and Technology)
　　Degenerations of Riemann surfaces over disks and their deformations

　　16:00--17:00
　　Kazuto Takao (Kyoto University)
　　On bridge decompositions and bridge positions for knots

14, May (Mon)
　　13:30--15:00
　　Kanako Oshiro (Sophia University)
　　Augmented Alexander matrices and generalizations of twisted Alexander invariants and quandle cocycle invariants I

　　15:30--17:00
　　Atsushi Ishii (Tsukuba University)
　　Augmented Alexander matrices and generalizations of twisted Alexander invariants and quandle cocycle invariants II

⇒ Past Seminars