Judith Querida Longyear (20 September 1938–13 December 1995) was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 and professor

Professor

A professor is a scholarly teacher; the precise meaning of the term varies by country. Literally, professor derives from Latin as a "person who professes" being usually an expert in arts or sciences; a teacher of high rank...

.

Professional overview

• Interest areas included: Graph Theory
  Graph theory
  In mathematics and computer science, graph theory is the study of graphs, mathematical structures used to model pairwise relations between objects from a certain collection. A "graph" in this context refers to a collection of vertices or 'nodes' and a collection of edges that connect pairs of...
  
  ; Combinatorics
  Combinatorics
  Combinatorics is a branch of mathematics concerning the study of finite or countable discrete structures. Aspects of combinatorics include counting the structures of a given kind and size , deciding when certain criteria can be met, and constructing and analyzing objects meeting the criteria ,...
  
  
• Member of the American Mathematical Society
  American Mathematical Society
  The American Mathematical Society is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, which it does with various publications and conferences as well as annual monetary awards and prizes to mathematicians.The society is one of the...
  
  
• Longyear taught mathematics at several universities including Dartmouth College
  Dartmouth College
  Dartmouth College is a private, Ivy League university in Hanover, New Hampshire, United States. The institution comprises a liberal arts college, Dartmouth Medical School, Thayer School of Engineering, and the Tuck School of Business, as well as 19 graduate programs in the arts and sciences...
  
   and Wayne State University
  Wayne State University
  Wayne State University is a public research university located in Detroit, Michigan, United States, in the city's Midtown Cultural Center Historic District. Founded in 1868, WSU consists of 13 schools and colleges offering more than 400 major subject areas to over 32,000 graduate and...
  
  

Publications

• "Hadamard tournaments of order 23", Ito Noboru , Leon Jeffrey S. , Longyear Judith Q., Mathematical journal of Okayama University 35, 1–15 ,19931200
• "There is One Hadamard Matrix of Order 24 and both Characters 1", 05/1979, Annals of the New York Academy of Sciences, vol. 319, issue 1 Second Intern, pp. 354–361
• A peculiar partition formula. Discrete Mathematics 78(1–2): 115–118 (1989)
• A New Construction for Hadamard Matrices of Orders 8t+4. J. Comb. Theory, Ser. A 38(1): 99–104 (1985)
• Order 24 Hadamard Matrices of Character at Least 3. J. Comb. Theory, Ser. A 27(1): 100–118 (1979)
• Some isomorphisms between pairs of Latin squares. J. Comb. Theory, Ser. B 21(2): 91–95 (1976)
• Tactical Constructions. J. Comb. Theory, Ser. A 19(2): 200–207 (1975)
• "Small Configurations and Their Arrays", Source: Duke Math. J. Volume 40, Number 4 (1973), 871–876.

Education overview

• Ph.D. Pennsylvania State University
  Pennsylvania State University
  The Pennsylvania State University, commonly referred to as Penn State or PSU, is a public research university with campuses and facilities throughout the state of Pennsylvania, United States. Founded in 1855, the university has a threefold mission of teaching, research, and public service...
  
  1972, Dissertation: Tactical Configurations

Personal overview

Her son, Bear Longyear , said the following of his mother: "She didn't shop, clean house, dress up, or even cook much; she spent most of every day curled up in an old armchair with a mug of coffee, a pack of cigarettes, a pile of sharp pencils, and a yellow legal pad, upon which she doodled the hours away in a miniscule [sic] hand, occasionally cursing quietly or whooping loudly. She didn't talk much – not to anyone that I could see – and when I demanded to know what she was doing, her explanations were incomprehensible."