fundamental group;
first Cech homotopy group;
one-dimensional;
D O I:
10.1016/S0166-8641(97)00167-3
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
Let X be a space of dimension at most 1. Then, the fundamental group is isomorphic to a subgroup of the first Cech homotopy group based on finite open covers. Consequently, for a one-dimensional continuum X, the fundamental group is isomorphic to a subgroup of the first Cech homotopy group. (C) 1998 Elsevier Science B.V.
机构:
Tokyo Inst Technol, Mat Res Ctr Element Strategy, Yokohama, Kanagawa 2268503, Japan
Japan Sci & Technol Agcy, ACCEL Project, Tokyo 1028666, JapanTokyo Inst Technol, Mat Res Ctr Element Strategy, Yokohama, Kanagawa 2268503, Japan
Zhang, Yaoqing
Xiao, Zewen
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Inst Technol, Mat Res Ctr Element Strategy, Yokohama, Kanagawa 2268503, Japan
Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, JapanTokyo Inst Technol, Mat Res Ctr Element Strategy, Yokohama, Kanagawa 2268503, Japan
机构:
Univ Cambridge, Ctr Math Sci, Dept Pure Math & Math Stat, Cambridge CB3 0WB, EnglandUniv Cambridge, Ctr Math Sci, Dept Pure Math & Math Stat, Cambridge CB3 0WB, England