Hiroshima University Topology-Geometry Seminar Information

Topology-Geometry Seminar is held on every Tuesday.
The talks are given mainly in Japanese.
Topology-Geometry Seminar 2011 starts on April 19, 2011.
Japanese version is here.

Speakers and Title of Talks

• 2/21 :Jun Yagi (Kochi University)
  The configuration space of a model for ringed hydrocarbon molecules (with S. Goto, Y. Hemmi and K.Komatsu)
• 2/7 :
  Kenichi Fukuda (Hiroshima University)
  On dissolution of order of Alexander quandles with \mathbb{F}_{49}
  Tomoya Hinawa (Hiroshima University)
  Quandle 4-cocycle invariant for twist-spun trefoil
  Katsuya Matsusaki (Hiroshima University)
  Cohomogeneity two actions on the complex hyperbolic plane
  Eriko Shinkawa (Hiroshima University)
  Invariant flat conformal structures and representations of Lie algebras
  Akira Kubo (Hiroshima University)
  A sufficient condition for congruency of orbits of Lie groups and some applications
  Koushirou Wada (Hiroshima University)
  On classification of quandles of cyclic type
  
• 1/31 :Atsutaka Kowata (Hiroshima University)
  On the commutants of a differential operator of order 2
• 1/17 :Masatoshi Sato (Graduate School of Science, Osaka University)
  A local signature for hyperelliptic broken Lefschetz fibrations
• 12/16 :Motoo Tange (RIMS Kyoto University)
  Lens spaces obtained by Dehn surgeries of S^3 or \Sigma(2,3,5)
• 12/13 :Kentaro Saji (Gifu university)
  Singularities of circular surfaces in the 3-sphere
• 12/6 :Yusuke Kuno (Hiroshima University)
  A generalization of Dehn twists
• 11/29 :Sadahiro Maeda (Saga University)
  A homogeneous submanifold with nonzero parallel mean curvature vector in Euclidean sphere (with S. Udagawa)
• 11/22 :Mikami Hirasawa (Nagoya Institute of Technology)
  Sphere eversion, a new method
• 11/15 :Masahiko Yoshinaga (Kyoto University)
  Minimal Stratifications for Line Arrangements
• 11/1 :Honda Shouhei (Kyushu University)
  Collapsing of Riemannian manifolds and one-dimensional regular sets
• 10/25 :Ayaka Shimizu (Osaka City University Advanced Mathematical Institute)
  The warping degree and the warping polynomial of a knot diagram
• 10/18 :Boumuki Nobutaka (Osaka City University Advanced Mathematical Institute)
  On a relation between potentials for pluriharmonic maps and para-pluriharmonic maps
• 8/2 :Teruhisa Kadokami (East China Normal University)
  Hyperbolicity and identification of Berge knots of type VII and VIII
• 7/26:
  Tomoya Hinawa (Hiroshima University)
  A classification of cyclic quandles and 2-point homogeneous quandles
  Katsuya Matsusaki (Hiroshima University)
  Homogeneous surfaces in the complex hyperbolic plane
  Satoru Tsuchie (Hiroshima University)
  Ricci curvatures of solvable submanifolds in symmetric spaces
  Akira Kubo (Hiroshima University)
  A sufficient condition for congruency of orbits of Lie groups and some applications
  Eriko Shinkawa (Hiroshima University)
  Invariant flat geometric structures on homogeneous spaces
  Koushirou Wada (Hiroshima University)
  An invariant of groups defined by a Lefschetz fibration over the 2-sphere
  
• 7/19 :Yusuke Kuno (Hiroshima University)
  On a generalization of Dehn twists
• 7/12 :Yasuyoshi Tsutsumi (Oshima National College of MaritimeTechnology)
  Negativity of the Lescop invariants of the Brieskorn-Hamm manifolds
• 7/5 :Yuichi YAMADA (The University of Electro-Communications)
  4-manifolds constructed by lens space surgeries
• 6/28 :Hiroko Murai (Nara Women's University)
  A Haken type theorem on intersections of essential laminations and genus 2 Heegaard surfaces
• 6/21 :Shoichi Fujimori (Okayama University)
  A construction for triply periodic minimal surfaces
• 6/14 :Sosuke Ashihara (Hiroshima University)
  On biquandles and ch-diagrams
• 6/7 :Jang, Yeonhee (Hiroshima University)
  Bridge presentations of links and meridian generators of link groups (joint work with Michel Boileau, University of Toulouse III)
• 5/31 :Michel Boileau（University of Toulouse）
  On commensurability classes of hyperbolic knot complements
• 5/24 :Takahiro Hashinaga (Hiroshima University)
  Three-dimensional solsolitons and minimality of the corresponding submanifolds
• 5/17 :Takanori Imabeppu(Hiroshima University)
  On arrow polynomials of checkerboard colorable virtual links
• 5/10 :Hiroshi Tamaru(Hiroshima University)
  Two-point homogeneous quandles
• 4/26 :Kouichi Yasui(Hiroshima University)
  Cork twisting exotic Stein 4-manifolds
• 4/19 :Ishibe Tadashi(Hiroshima University)
  On the fundamental groups of the complement of logarithmic free divisor

The seminars held in the past (academic) years

• '97
• '98
• '99
• 2000
• 2001
• 2002
• 2003
• 2004
• 2005
• 2006
• 2007
• 2008
• 2009
• 2010

Topology group