Eduard Selling

Eduard Selling (5 November 1834 in Ansbach – 31 January 1920 in Munich) was a German mathematician and inventor of calculating machines.

Selling studied mathematics at the Universities of Göttingen and Munich (under Philipp Ludwig von Seidel).

In 1873[c 2] he wrote an important paper on binary and ternary quadratic forms which was also translated into French and cited by Henri Poincaré, Émile Picard and Paul Gustav Heinrich Bachmann.

[3] Beginning with 1877 he also became concerned with insurance, and participated in the reorganization of the pensions in Bavaria on behalf of the Bavarian government.

Therefore, he built multiplication machines after the model of a Pantograph,[c 3] for which he got a patent in 1886, and a prize at the Chicago World's Fair in 1893.