Judith Q. Longyear

Judith Querida Longyear (20 September 1938 –13 December 1995 ) was an American mathematician and professor whose research interests included graph theory and combinatorics. Longyear was the second woman to ever earn a mathematics Ph.D. from Pennsylvania State University, where she studied under the supervision of Sarvadaman Chowla 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.