Cooper Harold Langford

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Cooper Harold Langford (25 August 1895, Dublin, Logan County, Arkansas – 28 August 1964) was an analytic philosopher and mathematical logician who co-authored the book Symbolic Logic (1932) with C. I. Lewis.

After spending his freshman year at the University of Arkansas, Langford transferred in 1915 to Clark University, where he received his A.B. degree in 1920. His college education was interrupted by WWI in 1917 when he joined the U.S. army and spent 20 months overseas. After receiving his A.B. degree, Langford enrolled in 1920 as a graduate student at Harvard University, where he earned his Ph.D. in psychology under Edwin Boring in 1924. With the aid of a Sheldon Traveling Fellowship, he studied logic and philosophy at Cambridge University during 1924–1925. Upon his return to the U.S., Langford became an instructor at Harvard from 1925 to 1927. After spending two academic years, 1927–1929, as an assistant professor at the University of Washington, he became in the autumn of 1929 an associate professor with tenure in the philosophy department at the University of Michigan. Langford became a full professor at U. Michigan in 1933, remaining there for the rest of his career. In the academic year 1935–1936, he was a Guggenheim fellow, dividing his time between Vienna and Cambridge England.[1][2]

Langford is famous as co-author of the 1932 book Symbolic Logic and the system of modal logic S5. His doctoral students include Arthur Walter Burks.

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