nLab
symmetry
Context
Group Theory
group theory
Classical groups
Finite groups
Group schemes
Topological groups
Lie groups
Super-Lie groups
Higher groups
Cohomology and Extensions
Contents
Idea
A symmetry is (in most classical situations) invariance under a group action, or infinitesimally, invariance under a Lie algebra action.
Revised on February 5, 2013 19:56:35
by
Urs Schreiber
(131.174.41.0)