Timeline for Covering maps in real life that can be demonstrated to students
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| S Oct 16, 2017 at 16:44 | history | suggested | jeq | CC BY-SA 3.0 |
Copied images to imgur.com, as they were not being displayed because of new https rule. Added links to original image sources.
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| Oct 16, 2017 at 16:10 | review | Suggested edits | |||
| S Oct 16, 2017 at 16:44 | |||||
| Mar 28, 2013 at 16:51 | comment | added | Ronnie Brown | I'll add something which is not exactly an answer to the question. I got the impression at Oxford in the late 1950s under Henry Whitehead that algebraic topology was about modelling topology by algebra, and any algebra was OK as long as it modelled the geometry. So when I found that most aspects of 1-dimensional homotopy theory were better modelled by groupoids rather than groups, I expected people to be pleased. But most algebraic topology texts model covering spaces by group actions, rather than by covering morphisms of groupoids, which gives a base point free approach, published in 1968! | |
| Dec 9, 2012 at 21:39 | history | edited | Ronnie Brown | CC BY-SA 3.0 |
added another picture
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| Dec 7, 2012 at 11:54 | history | edited | Ronnie Brown | CC BY-SA 3.0 |
added anothe comment
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| Dec 6, 2012 at 15:33 | comment | added | Tim Porter | Ronnie, you beat me to it!;-) | |
| Dec 6, 2012 at 12:22 | history | answered | Ronnie Brown | CC BY-SA 3.0 |