„The concept of rotation led to geometrical exponential magnitudes, to the analysis of angles and of trigonometric functions, etc. I was delighted how thorough the analysis thus formed and extended, not only the often very complex and unsymmetric formulae which are fundamental in tidal theory, but also the technique of development parallels the concept.“

Ausdehnungslehre (1844)

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Hermann Grassmann fotka
Hermann Grassmann10
German polymath, linguist and mathematician 1809 - 1877

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