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Four Dimensional Topology

November 29 -- December 1, 2019
Room E404/406/408, Department of Mathematics, Osaka University

Program (Japanese)
Program (English)
Abstracts (English) (in preparation )


Program
== November 29 (Fri) ==

13:30--14:10 Kouki Sato (University of Tokyo)
Category of formal knot complexes

14:30--15:10 Masaki Taniguchi (University of Tokyo)
Homology cobordism group of homology 3-spheres and Chern-Simons functional
(joint work with Yuta Nozaki and Kouki Sato)

15:30--16:10 Shigeru Takamura (Kyoto University)
New geometry behind group actions

16:30--17:10 Mizuki Fukuda (Tokyo Gakugei University)
On $\Gamma(p,q,r)$-representations of branched twist spins

17:30--18:10 Kokoro Tanaka (Tokyo Gakugei University)
The bridge number of surface links and kei colorings
(joint work with Kouki Sato)


== November 29 (Sat) ==

09:50--10:30 Kenta Hayano (Keio University)
Classification of genus-1 holomorphic Lefschetz pencils
(joint work with Noriyuki Hamada)

10:50--11:30 Jiro Adachi (Hokkaido University)
Goursat surgery and Engel structure

11:50--12:30 Koji Yamazaki (Tokyo Institute of Technology)
Automorphisms of Engel manifolds

14:00--14:40 Nobuhiro Nakamura (Osaka Medical College)
Homotopy non-equivalence of homeomorphism and diffeomorphism groups of spin 4-manifolds
(joint work with Tsuyoshi Kato and Hokuto Konno)

15:00--15:40 Nobuo Iida (University of Tokyo)
A Bauer-Furuta type refinement of Kronheimer-Mrowka's invariant for 4-manifolds with contact boundary

16:00--16:40 Takayuki Okuda (University of Tokyo)
Topologically inequivalent degenerations with same singular fibers

17:00--17:40 Hokuto Konno (RIKEN)
The diffeomorphism and homeomorphism groups of K3


== December 1 (Sun) ==

09:50--10:30 Kouichi Yasui (Osaka University)
Stably exotic 4-manifolds

10:50--11:30 Benjamin Bode (Osaka University)
A construction of elements of motion groups as algebraic varieties of low degree

11:50--12:30 Seiichi Kamada (Osaka University)
Motion groups of H-trivial links and immersed surface-links



Organizers: Seiichi Kamada, Kouichi Yasui and Takao Matumoto
E-mail:
kamada [AT] math.sci.osaka-u.ac.jp
kyasui [AT] ist.osaka-u.ac.jp
matumoto [AT] math.sci.hiroshima-u.ac.jp

Toptop


Last Modified on October 18, 2019.
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