12-6-1917

Kuratowski gave a talk, "On the definitions in mathematics," which became his first published paper. This work grew out of Jan Lukasiewicz's crushing criticism of the foundations of Stanislaw Zaremba's Theoretical Arithmetic (1912). Kuratowski's now famous 1921 definition of ordered pairs also grew out of Lukasiewicz's critique.

More information about:
Kazimierz Kuratowski
Jan Lukasiewicz