Andrzej Grzegorczyk

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Andrzej Grzegorczyk
Grzegorczyk in 2012
Born	(1922-08-22)22 August 1922 Warsaw, Poland
Died	20 March 2014(2014-03-20) (aged 91) Warsaw, Poland
Resting place	Cemetery in Pruszków, Poland 52°10′N 20°48′E
Nationality	Polish
Citizenship	Poland
Alma mater	Jagiellonian University University of Warsaw
Known for	Grzegorczyk hierarchy Grzegorczyk logic (S4Grz)
Spouse	Renata Maria Grzegorczykowa (m. 1953)
Children	Agnieszka Grzegorczyk-Przeciszewska Tomasz Grzegorczyk
Awards	Stefan Banach Prize (1957) Knight's Cross of Order of Polonia Restituta (1997) dr. h.c. of Blaise Pascal University (2010) dr. h.c. of Jagiellonian University (2013) Officer's Cross of Order of Polonia Restituta (2014)
Scientific career
Fields	Logic Ethics Mathematics philosophy Religious study Social issues Education
Institutions	University of Warsaw Polish Academy of Sciences University of Amsterdam
Thesis	On Topological Spaces in Topologies without Points  (1950)
Doctoral advisor	Andrzej Mostowski
Other academic advisors	Zygmunt Zawirski Władysław Tatarkiewicz
Doctoral students	Stanisław Krajewski
Signature
Notes
Family members include: Stanisław Jan Majewski Erazm Majewski Karol Borsuk Magdalena Borsuk-Białynicka Andrzej Białynicki-Birula Iwo Białynicki-Birula Marcin Przeciszewski

Andrzej Grzegorczyk ([ˈandʐɛj ɡʐɛˈɡɔrt͡ʂɨk]; 22 August 1922 – 20 March 2014) was a Polish logician, mathematician, philosopher and ethicist. He was noted for his work in computability, mathematical logic and the foundations of mathematics.