Evelyn Boyd Granville (May 1, 1924 – June 27, 2023) was an American mathematician and computer scientist who became the second African American woman to earn a Ph.D. in mathematics from a U.S. university. She made pioneering contributions to early computing and the U.S. space program before dedicating much of her later career to mathematics education.
Born Evelyn Boyd in Washington, D.C., she grew up during the Great Depression and the era of segregation. Her father held various low-paying jobs and left the family when she was young; she and her older sister were raised by their mother, Julia, and an aunt, both of whom worked at the Bureau of Engraving and Printing. Despite economic hardship and segregated public schools, Boyd thrived academically. She attended the highly regarded Dunbar High School, a competitive institution for Black students staffed by many excellent teachers who nurtured her interests in mathematics, science, and astronomy. She graduated as valedictorian.
With financial support from her aunt and a partial scholarship from Phi Delta Kappa, she entered Smith College in the fall of 1941. At Smith, one of a small number of Black women on campus, she majored in mathematics and physics while also pursuing astronomy. She excelled, was elected to Phi Beta Kappa and Sigma Xi, and graduated summa cum laude in 1945. Encouraged by a graduate scholarship from the Smith Student Aid Society, she applied to graduate programs and was accepted by both Yale University and the University of Michigan. She chose Yale for its financial aid package. There she studied functional analysis under Einar Hille, earning a master’s degree in 1946 and a Ph.D. in 1949 with the dissertation “On Laguerre Series in the Complex Domain.” In the same year, Marjorie Lee Browne also earned a mathematics doctorate (from Michigan); the first African American woman to do so had been Euphemia Lofton Haynes in 1943. Granville was one of only about ten women in the United States to receive a mathematics Ph.D. that year.
After a postdoctoral year as a research assistant at New York University’s Institute for Mathematics and Mechanics (now the Courant Institute), she accepted an associate professorship at Fisk University, a historically Black institution in Nashville, Tennessee, in 1950. Opportunities for Black women at many other colleges remained limited by discrimination. At Fisk she taught and inspired students; two of her female students later earned doctorates in mathematics. Frustrated by the constraints of segregation on academic institutions, she left after two years and returned to Washington, D.C.
In 1952 she joined the National Bureau of Standards as a mathematician, working on analyses related to missile fuses. Her division was later absorbed into the U.S. Army’s Diamond Ordnance Fuze Laboratories. There she developed an interest in the emerging field of computer programming. In 1956 she joined IBM. After a short training course, she programmed the IBM 650 (the first mass-produced computer) using the SOAP assembly language and later worked with FORTRAN on machines such as the IBM 704. When NASA contracted with IBM for space-related computing, she transferred to the Vanguard Computing Center in Washington, D.C. She contributed to orbit computations and computer procedures for Project Vanguard (uncrewed satellites) and Project Mercury (the first U.S. crewed orbital flights). In the early 1960s she worked for Space Technology Laboratories and North American Aviation on aspects of the Apollo program, including trajectory and lunar-landing related calculations, before returning to IBM as a senior mathematician in its Federal Systems Division.
Her industrial career coincided with the dawn of digital computing and the space race. She helped formulate the mathematical and programming methods needed to track satellites and spacecraft when computers were still novel and the objects being tracked were sometimes only the size of a grapefruit. Team-based work meant individual contributions were not always prominently credited in publications, yet her technical skill placed her at the center of major national projects.
In 1967, after a divorce from her first husband, Reverend Gamaliel Mansfield Collins (married 1961), she returned to academia as a professor at California State University, Los Angeles (CSULA). She taught numerical analysis, computer programming, and mathematics courses required for future elementary-school teachers. Disturbed by the weak preparation of many students, she became deeply involved in mathematics education reform. Through the Miller Mathematics Improvement Program she taught mathematics daily in an elementary school; she later directed enrichment programs for young students and co-authored (with Jason Frand) the textbook Theory and Applications of Mathematics for Teachers (1975; second edition 1978), which was adopted by dozens of colleges. She married realtor Edward V. Granville in 1970.
In 1984 she retired from CSULA and moved with her husband to Tyler, Texas. She continued teaching—briefly in public schools, then at Texas College (computer science and mathematics, mid-to-late 1980s), and from 1990 as the Sam A. Lindsey Professor of Mathematics at the University of Texas at Tyler, where she developed elementary enrichment programs. She retired again in the late 1990s but remained active in outreach, speaking about the importance of mathematics education and serving as a visible example that women and African Americans could excel in the field. After her second husband’s death she eventually returned to the Washington, D.C., area. She died in Silver Spring, Maryland, at age 99.
Granville received numerous honors, including an honorary doctorate from Smith College in 1989 (the first awarded by a U.S. institution to an African American woman mathematician), the Sam A. Lindsey Chair, recognition from the National Academy of Engineering and the National Academy of Sciences, the Wilbur Lucius Cross Medal from Yale, an honorary degree from Spelman College, and other tributes. Throughout her life she rejected the notion that “women can’t do math,” once summarizing a major accomplishment simply as “showing that women can do mathematics.”
Her career spanned pure mathematics, applied work in defense and aerospace, early computer programming, and decades of teaching and curriculum development. She navigated segregation, limited academic opportunities for Black women, and the male-dominated worlds of computing and space technology, yet consistently contributed at a high technical level while mentoring others and advocating for stronger mathematics education at every level. In an era when both race and gender created formidable barriers, Evelyn Boyd Granville demonstrated exceptional ability, adaptability, and commitment to opening doors for those who followed.
