Leon Henkin

Leon Albert Henkin was an American logician, whose works played a strong role in the development of logic, particularly in the theory of types. He was an active scholar at the University of California, Berkeley, where he made great contributions as a researcher, teacher, as well as in administrative positions. At this university he directed, together with Alfred Tarski, the Group in Logic and the Methodology of Science, from which many important logicians and philosophers emerged. He had a strong sense of social commitment and was a passionate defender of his pacifist and progressive ideas. He took part in many social projects aimed at teaching mathematics, as well as projects aimed at supporting women's and minority groups to pursue careers in mathematics and related fields. A lover of dance and literature, he appreciated life in all its facets: art, culture, science and, above all, the warmth of human relations. He is remembered by his students for his great kindness, as well as for his academic and teaching excellence.

19 April 1921

Born on the same birth date (19 April 1921): Anna Lee Aldred • Roberto Tucci

Born on the same birth day (19 April): Alexandre Boëly • Arthur Robertson (athlete) • Cemal Tollu • Christoph Bach (musician) • Eliot Ness • Erich Hartmann • Ernst Rüdin • Getúlio Vargas • Glenn T. Seaborg • Hayden Christensen • Hemmo Kallio • Hugh O'Brian • Jayne Mansfield • Jóannes Eidesgaard • Louis Amédée Achard • Mary Louise Booth • Ole Evinrude • Peter de Noronha • Samuel C. Morrison Jr. • Sir John Hobart, 2nd Baronet • Veniamin Kaverin • Willem Drost

Born in the same month (April 1921): Angelo DiGeorge • Frankie Thomas • Herman van Raalte • Jan Novák (composer) • Janet Blair • Jean Richard (actor) • Judy Agnew • Orunamamu • Robert Cliche • Robert Dhéry • Robert Karvelas