Jan Łukasiewicz

In the early 1920s, the Polish mathematician Jan Lukasiewicz discovered that if operators were written before the operands (prefix or Polish notation; for example, + a b), the parentheses are not needed. He was born on 21 December 1878 in Lemberg, Galicia, Austria-Hungary and died on 13 February 1956 in Dublin, Ireland. He was aged 77.

 More readings 
Łukasiewicz, Jan 1951. Aristotle’s syllogistic from the standpoint of modern formal logic. Oxford University Press. 2nd ed, enlarged 1957. Reprinted by Garland Publishing in 1987. ISBN 0-8240-6924-2

Category:1878 births
Category:1956 deaths
Category:20th-century Polish philosophers
Category:Polish mathematicians
Category:Polish Roman Catholics