Judith Querida Longyear (20 September 1938–13 December 1995) was an American mathematician and professor whose research interests included graph theory and

combinatorics Combinatorics is an area of mathematics primarily concerned with counting, both as a means and an end in obtaining results, and certain properties of finite structures. It is closely related to many other areas of mathematics and has many appl ...

. Longyear was the second woman to ever earn a mathematics Ph.D. from

Pennsylvania State University The Pennsylvania State University (Penn State or PSU) is a Public university, public Commonwealth System of Higher Education, state-related Land-grant university, land-grant research university with campuses and facilities throughout Pennsylvan ...

, where she studied under the supervision of

Sarvadaman Chowla Sarvadaman D. S. Chowla (22 October 1907 – 10 December 1995) was an Indian American mathematician, specializing in number theory. Early life He was born in London, since his father, Gopal Chowla, a professor of mathematics in Lahore, was then s ...

and wrote a thesis entitled ''Tactical Configurations''. Longyear taught mathematics at several universities including California Institute of Technology, Dartmouth College and Wayne State University. She worked on nested block designs and Hadamard matrices.

References

Graph theorists 20th-century American mathematicians 1938 births 1995 deaths 20th-century American women mathematicians {{US-mathematician-stub