## 幾何学コロキウム 「Distance of bridge presentations of links and essential surfaces in link exteriors」

2012年 　 6月 15日 16時 30分 ～ 2012年 　 6月 15日 18時 00分

Yeonhee Jang (奈良女子大学)

アブストラクト：For a given bridge presentation of a link, the distance of the
bridge presentation is the simplicial distance in the curve complex of
the bridge sphere between the two subcomplexes induced from the two
trivial tangles forming the bridge presentation. In this talk, we
discuss upper bounds of the distance given by using essential surfaces
in the link exterior and some applications.