Our authors are long-time associates of MacKichan Software and valuable contributors to our products. Carol Walker and Darel Hardy are authors of the Doing Mathematics series that accompanies our software. Their most recent edition is Doing Mathematics with Scientific WorkPlace and Scientific Notebook Version 5. They are also the authors of Applied Algebra: Codes, Ciphers, and Discrete Algorithms (Prentice Hall, 2003). Joining them as co-authors of the CD-based Calculus: Understanding Its Concepts and Methods are Fred Richman and Robert Wisner.
Darel Hardy received a Ph.D. in Mathematics in 1967 from New Mexico State University. His research specialties are in algebra and semigroups. He taught mathematics at Colorado State University from 1967 until his retirement in 2004. He was a Professor of Mathematics and a member of the Center for Science, Mathematics and Technology Education (CSMATE). Dr. Hardy was a Co-Director of the Colorado Integrated Mathematics Initiative, a CSMATE program designed to support mathematics reform in secondary mathematics in Colorado. He was the first director of CSU Math Day, which each year since 1977 has attracted several hundred secondary mathematics students to the Colorado State University campus for a day of mathematics competition. His publications include Basic Calculus (Brooks/Cole, 1975).
Fred Richman received an AB from Princeton University in 1958 and a Ph.D. from the University of Chicago in 1963. He taught at New Mexico State University from 1963 to 1990, worked at TCI Software Research from 1990 to 1991, and has been teaching at Florida Atlantic University since 1991. He has also worked sporadically at the Center for Communications Research in Princeton. He has written or co-authored over 100 research papers, mostly in constructive mathematics and in abelian group theory. He is the author of the textbook Number theory: an introduction to algebra and, with Bernard L. Johnston, of the textbook Numbers and symmetry. He worked as a programmer on early versions of Scientific WorkPlace.
Carol Walker received a Ph.D. in Mathematics in 1963 from New Mexico State University. Her research specialties are infinite abelian groups, applications of category theory and homological algebra, and algebraic aspects of fuzzy sets and fuzzy logic. Dr. Walker was a faculty member at New Mexico State University from 1964 until her retirement in August 1996, teaching mathematics, serving as Head of the Department of Mathematical Sciences, and as Associate Dean of the College of Arts and Sciences. In addition to the above, her publications include College Trigonometry (Scott, Foresman, 1970) with co-authors Fred Richman and Elbert Walker; Mathematics for the Liberal Arts Student (Brooks/Cole, 1967) with co-authors Fred Richman and Robert Wisner; Mathematics for Liberal Arts, Fifth Edition (Kendall Hunt, 2006) with co-authors Fred Richman, Robert Wisner and James Brewer; and A First Course in Fuzzy and Neural Control (Chapman Hall/CRC 2003) with co-authors Hung Nguyen, Ram Prasad, and Elbert Walker.
Robert J. Wisner received a Ph.D. in Mathematics in 1953 from the University of Washington. His mathematics research publications include group theory, combinatorics, and number theory. He has been on mathematics faculties of the University of British Columbia, Haverford College, and New Mexico State University, teaching the subject for 50 years until his retirement. He has authored or co-authored numerous books on, among other things, number theory and probability theory, in addition to a very early computer-oriented calculus book as well as books for high-school algebra. Also, for some 20 years, he was one of the authors of various K-8 mathematics programs for the Scott, Foresman Publishing Co., and for 24 years was the Consulting Editor in Mathematics for the Brooks/Cole Publishing Co. His second-most-recent book is the Fifth Edition of Mathematics for Liberal Arts (Kendall Hunt, 2006), with Fred Richman, Carol Walker, and James Brewer, and his most recent co-authored book is the electronic textbook Calculus: Understanding Its Concepts and Methods, published by MacKichan Software, Inc.
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