Alwin Korselt

Alwin Reinhold Korselt (17 March 1864, in Mittelherwigsdorf – 4 February 1947, in Plauen) was a German mathematician. He discovered Korselt's criterion, which provides a secondary definition for Carmichael numbers and also contributed an early result in algebraic logic.

Personal life The Korselts are a huge, widespread family that has been resident in the village of Mittelherwigsdorf near Zittau in Saxony (nowadays close to the Czech and Polish borders) since the early Middle Ages. Alwin Korselt was born there in 1864. Shortly afterwards he took part in controversy with Gottlob Frege, concerning Hilbert's axioms for the foundations of Euclidean geometry. He was treated by Frege as a partisan of Hilbert.

Korselt was influenced by Bolzano and had contact with Pringsheim, Hilbert, Russell, Fraenkel and Carathéodory.