Olaus Henrici

Olaus Magnus Friedrich Erdmann Henrici (1840-1918) a German-born mathematician.
1840 9 March: Born in Meldorf, Duchy of Holstein
1867 Published: Skeleton of structures: especially in their application to the building of steel and iron bridges. New York: Van Nostrand, 1867.
1878 Published: Congruent figures, 1878.
1879 Published: Elementary geometry. London: Longmans, Green, 1879.
1885 Appointed professor of mathematics and economics of the City and Guilds of London Institute's Central Institution
1903 Published: Vectors and rotors, 1903.[1]
1918 10 August: Died at Chandler's Ford, Hampshire, England