p-compact group Contents Examples Classification References Notes Navigation menuHomotopy Lie Groups: A Survey (PDF)Homotopy Lie Groups and Their Classification (PDF)expanding ite
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mathematicsalgebraic topologyhomotopicalcompact Lie groupprimep-completionSullivan spheressphereroot datap-adic integersrational integers
In mathematics, in particular algebraic topology, a p-compact group is (roughly speaking) a space that is a homotopical version of a compact Lie group, but with all the structure concentrated at a single prime p. This concept was introduced by Dwyer and Wilkerson.[1] Subsequently the name homotopy Lie group has also been used.
Contents
1 Examples
2 Classification
3 References
4 Notes
Examples
Examples include the p-completion of a compact and connected Lie group, and the Sullivan spheres, i.e. the p-completion of a sphere of dimension
- 2n − 1,
if n divides p − 1.
Classification
The classification of p-compact groups states that there is a 1-1 correspondence between connected p-compact groups, and root data over the p-adic integers. This is analogous to the classical classification of connected compact Lie groups, with the p-adic integers replacing the rational integers.
References
Homotopy Lie Groups: A Survey (PDF)
Homotopy Lie Groups and Their Classification (PDF)
Notes
^ W. G. Dwyer and C. W. Wilkerson, Homotopy fixed-point methods for Lie groups and finite loop spaces, Ann. of Math. (2) 139 (1994), no. 2, 395–442.
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