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Alonzo Church (June 14, 1903 – August 11, 1995) was an American mathematician and logician who made major contributions to mathematical logic and the foundations of theoretical computer science. He is best known for the lambda calculus, Church–Turing thesis, proving the undecidability of the Entscheidungsproblem, Frege–Church ontology, and the Church–Rosser theorem. ==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, he was able to attend the 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, publishing his first paper, on Lorentz transformations, and graduating in 1924 with a degree in mathematics. He stayed at Princeton, earning a Ph.D. in mathematics in three years under Oswald Veblen. He married Mary Julia Kuczinski in 1925 and 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 and then received a two-year National Research Fellowship. This allowed him to attend Harvard University in 1927–1928 and then both University of Göttingen and University of Amsterdam the following year. He taught philosophy and mathematics at Princeton, 1929–1967, and at the University of California, Los Angeles, 1967–1990. 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 )〕 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, 1990 )〕 A deeply religious person, he was a lifelong member of the Presbyterian church. He died in 1995 and was buried in Princeton Cemetery. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alonzo Church」の詳細全文を読む スポンサード リンク
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