Timeline for Crossed module structure on homotopy groups
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Jun 22, 2011 at 16:48 | comment | added | Ronnie Brown | This book on 2-D homotopy and combinatorial group theory surprisingly refrains from referring specifically to the 2-dimensional van Kampen type theorem published by Brown and Higgins in 1978, and which allows for new computations of homotopy 2-types, unobtainable from the chain complex approach. | |
| Apr 20, 2011 at 16:44 | history | answered | Sergey Melikhov | CC BY-SA 3.0 |