汎用データベース

世話人:川村一宏,平山至大,石井敦,丹下基生,蓮井翔

日時 2012年10月4日(木)16:50-17:50
場所 筑波大学 自然系学系D棟 D509
講演者 北山貴裕 氏 (京都大学 数理解析研究所)
講演題目 On an analogue of Culler-Shalen theory for higher dimensional representations
アブストラクト Culler and Shalen established a way to construct incompressible surfaces in a 3-manifold from ideal points of the SL_2-character variety. We present an analogous theory to construct certain kinds of branched surfaces from limit points of the SL_n-character variety. Such a branched surface induces a nontrivial presentation of the fundamental group as a 2-dimensional complex of groups. This is a joint work with Takashi Hara (Osaka University).
その他