Soft introduction to cohomology
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examples
- Noam Elkies, Pythagorean triple and Hilbert theorem 90
- 17 wallpaper groups
- Paal, Eugen, and Märt Umbleja. “Note on Homological Modeling of the Electric Circuits.” arXiv:1406.3905 [math-Ph], June 16, 2014. http://arxiv.org/abs/1406.3905.
- http://golem.ph.utexas.edu/category/2012/06/cohomology_in_everyday_life.html
- Penrose, Roger. 1992. “On the Cohomology of Impossible Figures.” Leonardo 25 (3/4) (January 1): 245–247. doi:10.2307/1575844.
books
carrying and cocycles
- http://terrytao.wordpress.com/2011/06/07/central-extensions-of-lie-groups-and-cocycle-averaging/
- http://blog.mikael.johanssons.org/archive/2006/07/carry-bits-and-group-cohomology/
- http://www.physicsforums.com/showthread.php?t=182195
- Isaksen, Daniel C. 2002. “A Cohomological Viewpoint on Elementary School Arithmetic”. The American Mathematical Monthly 109 (9) (11월 1): 796-805. doi:10.2307/3072368. http://www.jstor.org/stable/3072368