To my wife, Lillian, and our children,
Christina, Deborah, and Melissa, whose
support, encouragement, and faithful
prayers made this book possible.
David C. Lay
About the Authors
David C. Lay
As a founding member of the NSF-sponsored Linear Algebra Curriculum Study Group
(LACSG), David Lay was a leader in the movement to modernize the linear algebra
curriculum and shared those ideas with students and faculty through his authorship
of the first four editions of this textbook. David C. Lay earned a B.A. from Aurora
University (Illinois), and an M.A. and Ph.D. from the University of California at Los
Angeles. David Lay was an educator and research mathematician for more than 40
years, mostly at the University of Maryland, College Park. He also served as a visiting
professor at the University of Amsterdam, the Free University in Amsterdam, and the
University of Kaiserslautern, Germany. He published more than 30 research articles on
functional analysis and linear algebra. Lay was also a coauthor of several mathematics
texts, including Introduction to Functional Analysis with Angus E. Taylor, Calculus
and Its Applications, with L. J. Goldstein and D. I. Schneider, and Linear Algebra
Gems—Assets for Undergraduate Mathematics, with D. Carlson, C. R. Johnson, and
A. D. Porter.
David Lay received four university awards for teaching excellence, including, in
1996, the title of Distinguished Scholar-Teacher of the University of Maryland. In 1994,
he was given one of the Mathematical Association of America’s Awards for Distin-
guished College or University Teaching of Mathematics. He was elected by the univer-
sity students to membership in Alpha Lambda Delta National Scholastic Honor Society
and Golden Key National Honor Society. In 1989, Aurora University conferred on him
the Outstanding Alumnus award. David Lay was a member of the American Mathe-
matical Society, the Canadian Mathematical Society, the International Linear Algebra
Society, the Mathematical Association of America, Sigma Xi, and the Society for In-
dustrial and Applied Mathematics. He also served several terms on the national board of
the Association of Christians in the Mathematical Sciences.
In October 2018, David Lay passed away, but his legacy continues to benefit students
of linear algebra as they study the subject in this widely acclaimed text.
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