He was son of Dr. Roy Korfhage who as a chemist at Nestlé, inventor of Nestlé Crunch, in Fulton, Oswego County, New York. Korfhage got his bachelors (1952) in engineering mathematics at University of Michigan, while working part time at United Aircraft and Transport Corporation in East Hartford as programmer. At the same university, he got masters and Ph.D. (1962) in mathematics, his PhD dissertation being On Systems of Distinct Representatives for Several Collections of Sets advised by Bernard Galler (1962). Korfhage then joined the faculty at North Carolina State University (1962-64), Purdue University (1964-70), Southern Methodist University (1970-86) and the University of Pittsburgh School of Information Sciences (1986-98). Korfhages research focused on graph theory and information retrieval, and he wrote several textbooks and edited several collections in his area. He died of cancer in Pittsburgh.

Books

• Logic and algorithms (Wiley, 1966)
• Calculus (Academic Press, 1970). With Harley Flanders.
• A second course in calculus (Academic Press, 1974). With Harley Flanders and Justin Jesse Price
• Discrete computational structures (Academic Press, 1984)
• Principles of data structures and algorithms with Pascal (William C. Brown Publ., 1987). With Norman E. Gibbs.
• Information storage and retrieval (Wiley, 1997). Winner of ASIS Best information science book award (1998).

References