Three themes in the work of Charles Ehresmann: local-to-global; groupoids; higher dimensions
Tom 76 / 2007
Banach Center Publications 76 (2007), 51-63 MSC: Primary 01A60, 53C29; Secondary 81Q70, 22A22, 55P15. DOI: 10.4064/bc76-0-3
This paper illustrates the themes of the title in terms of: van Kampen type theorems for the fundamental groupoid; holonomy and monodromy groupoids; and higher homotopy groupoids. Interaction with work of the writer is explored.