Grassman
[ grahs-muh n, -mahn; German grahs-mahn ]
/ ˈgrɑs mən, -mɑn; German ˈgrɑsˌmɑn /
noun
Her·mann Gün·ther
[her-mahn gyn-tuh r] /ˈhɛr mɑn ˈgün tər/,1809–77,
German mathematician and linguist.