Paul Bernays
Paul Bernays  

Autumn 1949 in Oberwolfach


Born 
London, United Kingdom 
17 October 1888
Died 
18 September 1977 Zurich, Switzerland 
(aged 88)
Nationality  Swiss 
Fields  Mathematics 
Alma mater  University of Berlin 
Thesis 

Doctoral advisor  Edmund Landau 
Doctoral students 
Corrado Böhm Julius Richard Büchi Haskell Curry Erwin Engeler Gerhard Gentzen Saunders Mac Lane 
Known for 
Mathematical logic Axiomatic set theory Philosophy of mathematics 
Influences  Issai Schur, Edmund Landau 
Paul Isaac Bernays (17 October 1888 – 18 September 1977) was a Swiss mathematician, who made significant contributions to mathematical logic, axiomatic set theory, and the philosophy of mathematics. He was an assistant and close collaborator of David Hilbert.
Contents
 Biography 1
 Mathematical work 2
 Publications 3
 References 4
 External links 5
Biography
Bernays spent his childhood in Berlin, and attended the Köllner Gymnasium, 18951907. At the Friedrich Schottky; philosophy under Alois Riehl, Carl Stumpf and Ernst Cassirer; and physics under Max Planck. At the University of Göttingen, he studied mathematics under David Hilbert, Edmund Landau, Hermann Weyl, and Felix Klein; physics under Voigt and Max Born; and philosophy under Leonard Nelson.
In 1912, the George Pólya.
Starting in 1917, David Hilbert employed Bernays to assist him with his investigations of the foundations of arithmetic. Bernays also lectured on other areas of mathematics at the University of Göttingen. In 1918, that university awarded him a second Habilitation, for a thesis on the axiomatics of the propositional calculus of Principia Mathematica.^{[1]}
In 1922, Göttingen appointed Bernays extraordinary professor without tenure. His most successful student there was Gerhard Gentzen. In 1933, he was dismissed from this post because of his Jewish ancestry. After working privately for Hilbert for six months, Bernays and his family moved to Switzerland, whose nationality he had inherited from his father, and where the ETH employed him on occasion. He also visited the University of Pennsylvania and was a visiting scholar at the Institute for Advanced Study in 193536 and again in 195960.^{[2]}
Mathematical work
Bernays's collaboration with Hilbert culminated in the two volume work Grundlagen der Mathematik by Hilbert and Bernays (1934, 1939), discussed in Sieg and Ravaglia (2005). In seven papers, published between 1937 and 1954 in the Journal of Symbolic Logic, republished in (Müller 1976), Bernays set out an axiomatic set theory whose starting point was a related theory John von Neumann had set out in the 1920s. Von Neumann's theory took the notion of function as primitive; Bernays recast Von Neumann's theory so that sets and proper classes were primitive. Bernays's theory, with some modifications by Kurt Gödel, is now known as the Von Neumann–Bernays–Gödel set theory. A proof from the Grundlagen der Mathematik that a sufficiently strong consistent theory cannot contain its own reference functor is now known as the Hilbert–Bernays paradox.
Publications
 ^{[3]}
 Bernays, Paul (1958), Axiomatic set theory, Studies in Logic and the Foundations of Mathematics, Amsterdam: NorthHolland,
 Bernays, Paul (1976), Abhandlungen zur Philosophie der Mathematik (in German), Darmstadt: Wissenschaftliche Buchgesellschaft,
References
 ^
 ^ Institute for Advanced Study: A Community of Scholars
 ^ MacLane, Saunders (1935). , Volume I. By D. Hilbert and P. Bernays"Grundlagen der Mathematik"Review: (PDF). Bull. Amer. Math. Soc. 41 (3): 162–165.
 Kneebone, Geoffrey, 1963. Mathematical Logic and the Foundation of Mathematics. Van Nostrand. Dover reprint, 2001. A gentle introduction to some of the ideas in the Grundlagen der Mathematic.
 Müller, Gert H., ed. (1976), Sets and classes. On the work by Paul Bernays, Studies in Logic and the Foundations of Mathematics 84, Amsterdam: NorthHolland,
 Lauener, Henri (1978), "Paul Bernays (18881977)", Zeitschrift für Allgemeine Wissenschaftstheorie 9 (1): 13–20,
 Sieg, Wilfried; Ravaglia, Mark (2005), "Chapter 77. David Hilbert and Paul Bernays, Grundlagen der Mathematik", in GrattanGuinness, Ivor, Landmark writings in western mathematics 16401940, Elsevier B. V., Amsterdam, pp. 981–99,
 Bernays and Set Theory, Akihiro Kanamori, The Bulletin of Symbolic Logic, Vol. 15, No. 1 (Mar., 2009), pp. 43–69.
External links
 Hilbert Bernays Project
 .
 (1976)Paul Bernays: A Short BiographyPaul Bernays,
 Paul Bernays at the Mathematics Genealogy Project

