When1: 1844
When2: 1862
Who: Hermann Grassmann [Grassmann, Hermann]
What: mathematician
Where: Germany
works\ Theory of Linear Extension [1844]; Theory of Extension [1862]
Detail: He lived 1809 to 1877 and invented hypercomplex numbers {Grassmann variable}. Hypernumbers can represent tensors, quaternions, matrices, determinants, and all number types. Grassmann variables anti-commute: m . n = - n . m. He studied calculus of extension. Perhaps, space-time has extra, Grassmann dimensions to allow supersymmetry and supergravity.
Mathematical Sciences>Mathematics>History>Number Theory
3-Mathematics-History-Number Theory
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Date Modified: 2022.0224