Poincaré group
Group of flat spacetime symmetries / From Wikipedia, the free encyclopedia
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For the Poincaré group (fundamental group) of a topological space, see Fundamental group.
The Poincaré group, named after Henri Poincaré (1906),[1] was first defined by Hermann Minkowski (1908) as the isometry group of Minkowski spacetime.[2][3] It is a ten-dimensional non-abelian Lie group that is of importance as a model in our understanding of the most basic fundamentals of physics.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Henri_Poincare.jpg/180px-Henri_Poincare.jpg)