Ruel Vance Churchill (12 December 1899,

Akron, Indiana Akron is a town in Henry Township, Fulton County, Indiana, Henry Township, Fulton County, Indiana, Fulton County, Indiana, United States. The population was 1,167 at the 2010 census. History Akron was originally named Newark by settlers from Newa ...

– 31 October 1987,

Ann Arbor, Michigan Ann Arbor is a city in the U.S. state of Michigan and the county seat of Washtenaw County, Michigan, Washtenaw County. The 2020 United States census, 2020 census recorded its population to be 123,851. It is the principal city of the Ann Arbor ...

) was an American mathematician known for writing three widely used textbooks on applied mathematics. In 1922 Churchill received his undergraduate degree from the

University of Chicago The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park neighborhood. The University of Chicago is consistently ranked among the b ...

. In 1929 he received his PhD from the

University of Michigan , mottoeng = "Arts, Knowledge, Truth" , former_names = Catholepistemiad, or University of Michigania (1817–1821) , budget = $10.3 billion (2021) , endowment = $17 billion (2021)As o ...

under George Rainich with thesis ''On the Geometry of the Riemann Tensor''. He spent his entire career as a member of the U. of Michigan mathematics faculty and retired in 1965 as professor emeritus. His doctoral students include

Earl D. Rainville Professor Earl David Rainville (5 November 1907 – 29 April 1966) taught in the Department of Engineering Mathematics at the University of Michigan, where he began as an assistant professor in 1941. He studied at the University of Colorado, receiv ...

Books

*Complex Variables and Applications, McGraw-Hill, 1st edition 1948, 2nd edition 1960, The 3rd (1974) and later editions were co-authored with James Ward Brown *Fourier Series and Boundary Value Problems, McGraw-Hill, 1941, 2nd edition 1963 *Modern Operational Mathematics in Engineering, McGraw-Hill, 1944 *Operational Mathematics, McGraw-Hill, 1958, 2nd edition of the 1944 book but with a new title, 3rd edition 1972

Selected articles

* * * *with R. C. F. Bartels: *with C. L. Dolph:

References

External links

1899 births 1987 deaths 20th-century American mathematicians University of Chicago alumni University of Michigan alumni University of Michigan faculty People from Indiana American textbook writers {{US-mathematician-stub