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lukasiewiczJan Łukasiewicz (1878–1956) was a Polish logician, mathematician and philosopher who became the earliest founder of the Warsaw school of logic, and one of the principal architects and teachers of that school.
He grew up in Lwów. In 1897 he went on to Lwów University of Jan Kazimierz where he studied philosophy and mathematics. He was a pupil of great philosopher Kazimierz Twardowski.
He completed his philosophy studies at the University of Berlin and the University of Louvain in Belgium. In 1902 he received a Doctor of Philosophy degree.
His most famous achievement was to give the first rigorous formulation of many-valued logic. He thought innovatively about traditional logic. He introduced many improvements in propositional logic, and became the first historian of logic to treat the subject’s history from the standpoint of modern formal logic.

He worked at Warsaw University.
In 1919 Łukasiewicz left the university to serve as Polish Minister of Religious Denominations and Public Education in the Paderewski government until 1920.
He had been a rector of the university twice. Łukasiewicz and Stanisław Leśniewski founded the famous Lwów–Warsaw school of logic.
In 1928 he married Regina Barwińska.
Łukasiewicz invented the Polish notation (named after his nationality) for the logical connectives around 1920.
At the outbreak of war in September 1939 the Łukasiewiczes’ home was bombed by the Luftwaffe and all his books, papers and correspondence were destroyed, except for one volume of his bound offprints.
The German occupiers closed the university and Łukasiewicz found employment in the Warsaw city archives.
Łukasiewicz taught in the underground university. A lot of his students and friends were killed in Nazi camp. In 1944 Łukasiewicz sent the wish to Scholz that he and his wife should leave Poland. They left Warsaw on 17 July 1944, just two weeks before the outbreak of the Warsaw Rising.
They stayed in Münster, enduring allied bombing, until January 1945, when they were offered accommodation by Jürgen von Kempski at his farm in Hembsen in Westphalia.
In October 1945 they travelled to Brussels. Lukasiewicz didn’t want to return to Poland under communist control.
In February 1946 he received an offer to go to Ireland. On 4 March 1946 the Łukasiewiczes arrived in Dublin, where they were received by the Foreign Secretary and the Taoiseach Eamon de Valera. In autumn 1946 Łukasiewicz was appointed Professor of Mathematical Logic at the Royal Irish Academy.
He was in constant correspondence with colleagues mathematicians abroad and in Poland.
He lectured on mathematical logic at Queen’s University Belfast and at University College Dublin. Unfortunately his health was poor and he had several heart attacks. After operation gallstones he had coronary thrombosis and died in hospital on 13th February 1956.
He was buried in Glasnevin Cemetary.

On his gravestone there are words: ‘far from dear Lwów and Poland’.

His wife deposited all his esseays, correspondence, scientific papers in Library of the University of Manchester.
In 2008 the Polish Information Processing Society established the Jan Łukasiewicz Award for the most innovative Polish IT companies.

Nagroda imienia Jana Łukasiewicza

From 1999 to 2004, the Department of Computer Science building at UCD was called the Łukasiewicz Building.


Profesor Jan Łukasiewicz – ojciec światowej informatyki – radio

Jan Łukasiewicz – Stanford Encyclopedia


Foto of Jan Łukasiewicz’s