Hiroshima University Topology-Geometry Seminar

Topology-Geometry Seminar is held on every Tuesday (and temporarily online using the Zoom platform).
The talks are given mainly in Japanese.

May 11 (Tue), 2021 (15:00-16:00 at Zoom)
Takayuki Okuda (Hiroshima University) :
Delsarte theory on compact homogeneous spaces
May 18 (Tue), 2021 (15:00-16:00 at Zoom)
Keisuke Teramoto (Hiroshima University) :
Focal surfaces of wave fronts with respect to unbounded principal curvatures
May 25 (Tue), 2021 (15:00-16:00 at Zoom)
Serban Matei Mihalache (Tohoku University) :
Invariants of 3-manifolds using branched spines and Hopf algebras
June 15 (Tue), 2021 (15:00-16:00 at Zoom)
Tsukasa Ishibashi (Research Institute for Mathematical Sciences, Kyoto University), Wataru Yuasa (Research Institute for Mathematical Sciences, Kyoto University) :
Skein and cluster algebras of marked surfaces without punctures for sl(3)
July 13 (Tue), 2021 (15:00-16:00 at Zoom)
Shintaro Akamine (Nihon University) :
Reflection principles for maximal surfaces and related topics
July 20 (Tue), 2021 (15:00-16:00 at Zoom)
Naoki Kitazawa (Kyusyu University) :
Round fold maps on 3-dimensional closed manifolds

July 27 (Tue), 2021 (15:00-16:20 at Zoom)

Kento Ogawa (Hiroshima University) :
Locally Johnson graphs and Galois theory
Yuya Nishimura (Hiroshima University) :
The computational complexity of classical link recognition
Shin Kaneda (Hiroshima University) :
Higher genus nonorientable maximal surfaces