Mathematician:Peter Yff

Mathematician
American mathematician best known for Yff's Conjecture.

Nationality
American

History

 * Born: 8 March 1924 in Chicago, Illinois, United States
 * 1947: Bachelor of Science, Roosevelt College
 * 1948: Master of Science, University of Chicago
 * 1948 -- 1950: Instructor, Roosevelt College, Chicago
 * 1951 -- 1955: Assistant professor, American U., Beirut, Lebanon
 * 1957: Doctor of Philosophy, University of Illinois
 * 1957-1958: Assistant professor, Fresno (California) State College
 * 1958 -- 1964: Associate professor, American U., Beirut
 * 1964 -- 1965: Research fellow, U. Toronto
 * 1964 -- 1988: Professor, American U., Beirut
 * 1987 -- 1988: Visiting lecturer, U. Louisville
 * 1988 -- 1997: Visiting professor, Ball State University, Muncie, Indiana
 * Died: 13 November 2019 in Oak Lawn, Illinois

Theorems and Definitions

 * Yff's Conjecture