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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.

References

1. "Birth of Judith Q. Longyear-1938". The Evening News. 1938-09-20. p. 2. Retrieved 2020-01-17.
2. "Judith Querida Longyear". Find a Grave. Retrieved January 17, 2020.
3. "Ph.D. Graduates | Department of Mathematics". math.psu.edu. Retrieved 2020-01-17.
4. Judith Q. Longyear at the Mathematics Genealogy Project
5. PSU Mathematics Alumni, retrieved 2014-06-25.
6. ^ Longyear, J.Q. (1981). "A survey of nested designs". Journal of Statistical Planning and Inference. 5 (2): 181–187. doi:10.1016/0378-3758(81)90028-8.
7. Longyear, Judith Q. (1974). "Tactical configurations: An introduction". In Bari, Ruth A.; Harary, Frank (eds.). Graphs and Combinatorics: Proceedings of the Capital Conference on Graph Theory and Combinatorics at the George Washington University, June 18–22, 1973. Lecture Notes in Mathematics. Vol. 406. pp. 325–329. doi:10.1007/BFb0066454. ISBN 978-3-540-06854-9.
8. Graphs and Permutations - LONGYEAR - 2006 - Annals of the New York Academy of Sciences - Wiley Online Library
9. Longyear, Judith Q. (1986). "Nested group divisible designs and small nested designs". Journal of Statistical Planning and Inference. 13: 81–87. doi:10.1016/0378-3758(86)90121-7.
10. Ito, Noboru; Leon, Jeffrey S; Longyear, Judith Q (1981). "Classification of 3-(24, 12, 5) designs and 24-dimensional Hadamard matrices". Journal of Combinatorial Theory, Series A. 31: 66–93. doi:10.1016/0097-3165(81)90054-6.

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