Poincaré group
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The Poincaré group, named after Henri Poincaré, was first defined by Hermann Minkowski as the isometry group of Minkowski spacetime. It is a ten-dimensional non-abelian Lie group that is of importance
Henri Poincaré
Lorentz transformation
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In physics, the Lorentz transformations are a six-parameter family of linear transformations from a coordinate frame in spacetime to another frame that moves at a constant velocity relative to the for
Poincaré group
…through time or space (four degrees, one per dimension); reflection through a plane (three degrees, the freedom in orientation of this plane); or a "boost" in any of the three spatial directions (three degrees). Composition of transformations is the operation of the Poincaré group, with rotations being…
Hendrik Lorentz in 1916.
GPB circling earth