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Alonzo Church
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{{About|the mathematician and logician|the president of the University of Georgia, U.S.A|Alonzo S. Church}}{{short description|American mathematician}}- the content below is remote from Wikipedia
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Life
Alonzo Church was born on June 14, 1903, in Washington, D.C., where his father, Samuel Robbins Church, was the judge of the Municipal Court for the District of Columbia. The family later moved to Virginia after his father lost this position because of failing eyesight. With help from his uncle, also named Alonzo Church, the son attended the private Ridgefield School for Boys in Ridgefield, Connecticut.The Ridgefield School for Boys, also known as the Ridgefield School, was a private school that existed from 1907 to 1938. See The Ridgefield School. After graduating from Ridgefield in 1920, Church attended Princeton University, where he was an exceptional student. He published his first paper on Lorentz transformations and graduated in 1924 with a degree in mathematics. He stayed at Princeton for graduate work, earning a Ph.D. in mathematics in three years under Oswald Veblen.He married Mary Julia Kuczinski in 1925. The couple had three children, Alonzo Church, Jr. (1929), Mary Ann (1933) and Mildred (1938).After receiving his Ph.D., he taught briefly as an instructor at the University of Chicago. He received a two-year National Research Fellowship that enabled him to attend Harvard University in 1927â€“1928, and the University of GÃ¶ttingen and University of Amsterdam the following year.He taught philosophy and mathematics at Princeton for nearly four decades, 1929â€“1967. He taught at the University of California, Los Angeles, 1967â€“1990. He was a Plenary Speaker at the ICM in 1962 in Stockholm.Church, Alonzo. "Logic, arithmetic and automata." {{Webarchive|url=https://web.archive.org/web/20131228050922weblink |date=2013-12-28 }} In Proceedings of the International Congress of Mathematicians, pp. 23â€“35. 1962.He received honorary Doctor of Science degrees from Case Western Reserve University in 1969,Honorary degrees awarded by Case Western Reserve University Princeton University in 1985,Honorary degrees awarded by Princeton University {{webarchive|url=https://web.archive.org/web/20160207011946weblink |date=2016-02-07 }} and the University at Buffalo, The State University of New York in 1990 in connection with an international symposium in his honor organized by John Corcoran.Finding Aid for The Honorary Degree Conferral of Doctor of Science to Alonzo Church, 1990A deeply religious person, Church was a lifelong member of the Presbyterian church.WEB, Introduction Alonzo Church: Life and Work,weblink 6 June 2012, 4, A deeply religious person, he was a lifelong member of the Presbyterian church., dead,weblink" title="web.archive.org/web/20120901152639weblink">weblink 1 September 2012, He died in 1995 and was buried in Princeton Cemetery.Mathematical work
Church is known for the following significant accomplishments:- His proof that the Entscheidungsproblem, which asks for a decision procedure to determine the truth of arbitrary propositions in a first-order mathematical theory, is undecidable. This is known as Church's theorem.JOURNAL, A., Church, Alonzo Church, An unsolvable problem of elementary number theory, American Journal of Mathematics, 58, 2, 1936, 345â€“363, 10.2307/2371045, 2371045,
- His proof that Peano arithmetic is undecidable.
- His articulation of what has come to be known as the Churchâ€“Turing thesis.
- He was the founding editor of the Journal of Symbolic Logic, editing its reviews section until 1979.
- His creation of the lambda calculus.
Philosophical work
}}Students
Many of Church's doctoral students have led distinguished careers, including C. Anthony Anderson, Peter B. Andrews, George A. Barnard, David Berlinski, William W. Boone, Martin Davis, Alfred L. Foster, Leon Henkin, John G. Kemeny, Stephen C. Kleene, Simon B. Kochen, Maurice L'AbbÃ©, Isaac Malitz, Gary R. Mar, Michael O. Rabin, Nicholas Rescher, Hartley Rogers, Jr., J. Barkley Rosser, Dana Scott, Raymond Smullyan, and Alan Turing.WEB,weblink Mathematics Genealogy Project, 12 August 2010,weblink" title="web.archive.org/web/20100804125134weblink">weblink 4 August 2010, live, A more complete list of Church's students is available via Mathematics Genealogy Project.Books
- Alonzo Church, Introduction to Mathematical Logic ({{ISBN|978-0-691-02906-1}})JOURNAL, Henkin, Leon, Review: Introduction to Mathematical Logic by Alonzo Church, Bull. Amer. Math. Soc., 1957, 63, 5, 320â€“323,weblink 10.1090/s0002-9904-1957-10129-3,
- Alonzo Church, The Calculi of Lambda-Conversion ({{isbn|978-0-691-08394-0}})JOURNAL, Orrin Frink, Frink Jr., Orrin, Review: The Calculi of Lambda-Conversion by Alonzo Church, Bull. Amer. Math. Soc., 1944, 50, 3, 169â€“172,weblink 10.1090/s0002-9904-1944-08090-7,
- Alonzo Church, A Bibliography of Symbolic Logic, 1666â€“1935 ({{isbn|978-0-8218-0084-3}})
- C. Anthony Anderson and Michael ZelÃ«ny, (eds.), Logic, Meaning and Computation: Essays in Memory of Alonzo Church ({{isbn|978-1-4020-0141-3}})
See also
- Churchâ€“Turingâ€“Deutsch principle
- Higher-order logic
- List of pioneers in computer science
- Modern Platonism
- Universal set
Notes
{{Reflist}}References
- Enderton, Herbert B., weblink" title="web.archive.org/web/20120901152639weblink">Alonzo Church: Life and Work. Introduction to the Collected Works of Alonzo Church, MIT Press, not yet published.
- Enderton, Herbert B., In memoriam: Alonzo Church, The Bulletin of Symbolic Logic, vol. 1, no. 4 (Dec. 1995), pp. 486â€“488.
- Wade, Nicholas, Alonzo Church, 92, Theorist of the Limits of Mathematics (obituary), The New York Times, September 5, 1995, p. B6.
- Hodges, Wilfred, Obituary: Alonzo Church, The Independent (London), September 14, 1995.
- weblink" title="web.archive.org/web/20150310080250weblink">Alonzo Church interviewed by William Aspray on 17 May 1984. The Princeton Mathematics Community in the 1930s: An Oral-History Project, transcript number 5.
- Rota, Gian-Carlo, Fine Hall in its golden age: Remembrances of Princeton in the early fifties. In A Century of Mathematics in America, Part II, edited by Peter Duren, AMS History of Mathematics, vol 2, American Mathematical Society, 1989, pp. 223â€“226. Also available weblink" title="web.archive.org/web/20150310024937weblink">here.
- JOURNAL, On Carnap's Analysis of Statements of Assertion and Belief, The Journal of Symbolic Logic, 1950, 10, 5, 97â€“99, 10.2307/3326684, Church, A.,
- JOURNAL, harv, C. Anthony, Anderson, Alonzo Church's contributions to philosophy and Intensional Logic, 1998, 10.1.1.26.7389, 421020,
External links
- {{MacTutor Biography|id=Church}}
- Princeton University Library, Manuscripts Division, The Alonzo Church Papers, 1924â€“1995: finding aid.
- A bibliography of Church's reviews for The Journal of Symbolic Logic, with a link to each
- {{Find a Grave|7076221}}
- Alonzo Church, 92, Theorist Of the Limits of Mathematics New York Times obituary
- OBITUARY: Alonzo Church from The Independent
- In memoriam: Alonzo Church (1903â€“1995) by Irving H. Anellis, Modern Logic Vol. 5, No. 4 (1995).
- In memoriam: Alonzo Church 1903â€“1995 by H. B. Enderton, The Bulletin of Symbolic Logic Vol. 1, No.5 (1995).
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