Georg Kreisel
Austrian mathematician and logician
Georg Kreisel FRS was an Austrian-born mathematical logician who studied and worked in the United Kingdom and America. Wikipedia
Born: September 15, 1923, Graz, Austria
Died: March 1, 2015 (age 91 years), Salzburg, Austria
Notable students: Henk Barendregt, Michael J. Beeson, and Richard Statman