Abstract
This is an introductory survey of the passage from groups to groupoids and their higher dimensional versions, with most emphasis on calculations with crossed modules and the construction and use of homotopy double groupoids.
Citation
Ronald Brown. "Groupoids and crossed objects in algebraic topology." Homology Homotopy Appl. 1 (1) 1 - 78, 1999.
Information
Published: 1999
First available in Project Euclid: 13 February 2006
zbMATH: 0920.55002
MathSciNet: MR1691707
Subjects:
Primary:
55-02
Secondary:
18D05
,
18G55
,
20L05
,
55Q05
Rights: Copyright © 1999 International Press of Boston
