Group (mathematics)
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In mathematics, a group is a set with an operation that combines any two elements of the set to produce a third element within the same set and the following conditions must hold: the operation is ass
A periodic wallpaper pattern gives rise to a wallpaper group.
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
Group (mathematics)
…of a given type form a general group. Lie groups appear in symmetry groups in geometry, and also in the Standard Model of particle physics. The Poincaré group is a Lie group consisting of the symmetries of spacetime in special relativity. Point groups describe symmetry in molecular chemistry. The concept of…
Henri Poincaré