Darel’s Score Card

Education

B.S. New Mexico State University, 1962
M.S. New Mexico State University, 1964
Ph.D. New Mexico State University, 1967

Advisor Robert J. Wisner

Professional Experience

University Title Dates
Seattle University Instructor 1964–1965
Colorado State University Assistant Professor of Mathematics 1967–1972
Colorado State University Associate Professor of Mathematics 1972–1985
University of Nebraska Visiting Associate Professor of Mathematics Spring 1979
Colorado State University Professor of Mathematics 1985–2004
New Mexico State University Visiting Professor of Mathematics Spring 1992

Funded Projects

Project Title Agency Dates
Western Mathematics Scholars Program Colo Dir NSF 1990–1992
CSU Color Workstation Proj PI NSF 1991–1992
Colo Integrated Mathematics Initiative PI CCHE 1995–1997
Articulation, Assessment, and Placement Conf PI CCHE 1997–1998
Algebra in Context Co PI CUE, RMTEC 1995–1997
Assessment of college Algebra in Context Co PI RMTEC 1998–1999

Committee Service and Administrative Assignments

  1. Organizer and First Director, CSU Math Day, 1977
  2. CSU Faculty Council, 1984–1996
  3. Executive Committee, Department of Mathematics, 1983–1984, 1987–1991,
    1992–1993
  4. Director, Committee on Research, Development, and Computing, Department of
    Mathematics, 1982–1992
  5. Faculty Council committee on Instructional Development, 1989–1992
  6. Director, College of Natural Sciences Macintosh Lab, 1987–1989
  7. Five-year Review Committee, Department of Mathematics, 1982
  8. College of Natural Sciences Instructional Computing Committee, 1983–1988
  9. Colorado Director, Western Mathematics Scholars Program, 1989–1992
  10. Director of Undergraduate Instruction, Department of Mathematics, 1985–1986
  11. Teacher Education Advisory Committee, CSU, 1983–1986
  12. Task Force of Student Information System, CSU, 1984–1986
  13. Five-year Review Committee, Department of Mathematics, 1991
  14. Faculty Council Committee on Intercollegiate Athletics, 1993–1996
  15. Chair, College of Natural Sciences Computing Advisory Committee, 1992–1993
  16. Chair, Department of Mathematics Calculus Advisory Committee, 1993
  17. Course Coordinator for Calculus I, 1992–2000
  18. Board of Directors, Rocky Mountain Mathematics Consortium, 1993–1997
  19. College of Natural Sciences Computing Oversight Committee, 1995–1996
  20. Rocky Mountain Teacher Education Collaborative Leadership Team, 1995–2000
  21. Chair, Mathematical Association of America Rocky Mountain Region, 1997–1998
  22. Program Chair, Mathematical Association of America Rocky Mountain Region,
    1999-2000

Lectures

  1. Matrix number theory, Conference on Pure and Applied
    Mathematics, New Mexico Institute of Mining and Technology, 1967
  2. Matrix number theory and Fibonacci numbers, Southwest
    Section Meeting of MAA, University of Arizona, 1967
  3. An old familiar formula in a semigroup setting,
    National Meeting of the American Mathematical Society, Toronto, 1967
  4. An old familiar formula in a semigroup setting, CSU
    colloquium, 1967
  5. How many primes are there? CSU Math Club, 1968
  6. How many primes are there? Sterling High School, 1969
  7. Infinite cardinal arithmetic, Denver East High School,
    1969
  8. An embedding theorem for weakly inverse semigroups,
    AMS national meeting, San Antonio, 1970
  9. Egg boxes and Green’s theorem, CSU colloquium, 1970
  10. Infinite cardinal arithmetic, Thomas Jefferson High
    School, 1971
  11. Matrix number theory, Fairview High School, Boulder,
    1971
  12. Constructive mathematics, CSU colloquium, 1973
  13. Matrices and Fibonacci numbers, Rocky Mountain High
    School, 1974
  14. Calculators, Good or Bad?, Northeastern Junior College
    Science Day, 1975
  15. Semilattices of proper inverse semigroups, AMS
    national meeting, San Antonio, 1976
  16. What to do if close is good enough, National Council
    of Teachers of Mathematics, El Paso, 1976
  17. Some forgotten topics in analytic geometry,
    Mathematical Association of America, Denver, 1976
  18. How do mathematicians make up problems? CSU KME, 1977
  19. The Biordered set of idempotents of a regular
    semigroup, CSU colloquium, 1978
  20. The semigroup of closed relations, University of
    Nebraska, 1979
  21. The maximal regular ideal of the semigroup of binary
    relations, CSU 1979
  22. Automorphisms of the semigroup of binary relations,
    University of Nebraska, 1979
  23. Partial orders and their semigroup of binary
    relations, AMS, Boulder, 1980
  24. The domain-range trace of a finite partial order, AMS,
    Boulder, 1980
  25. Varsity mathematics: A competitive sport for the gifted and
    talented, NCTM, El Paso, 1981
  26. Geometric Solids, KME, CSU, 1981
  27. Intersection of the maximal regular subsemigroups of the semigroup of binary
    relations, University of Arkansas, 1982
  28. Subsemigroup of binary relations determined by two idempotents, invited paper,
    special session on semigroups, AMS section meeting, Norman, 1983
  29. Implications of Scientific Calculators on the Mathematics Curriculum, panel chair, MAA Regional meeting, Fort Collins, 1983
  30. A search for large primes, KME CSU, 1986
  31. Best rational approximations, Poudre School District Math Teachers, 1986
  32. The geometry of the semigroup of binary relations, NMSU, 1988
  33. The geometry of the semigroup of binary relations, Vienna, Austria, 1988
  34. Computer algebra systems, CSU Math Day, 1988
  35. The geometry of the semigroup of binary relations, University of Nebraska,
    1989
  36. The Western Mathematics Scholars Program, CSU Math Day, 1989
  37. Scientific Visualization, MESA, Boltz Junior High, 1989
  38. Scientific Visualization, Rocky Mountain Association of Computing in
    Education, keynote speaker, Denver 1990
  39. Scientific Visualization, CSU Math Day, 1990
  40. Scientific Visualization: A tool for teaching mathematics, Technology in
    Education Conference, Snowmass, 1991
  41. Arithmetic in the semigroup of binary relations, New Mexico State University,
    1992
  42. Maple Labs and Calculus at Colorado State University, International Conference
    on Technology in Collegiate Mathematics, Chicago, 1992
  43. Using Maple in Undergraduate Mathematics, Mathematics Department, University
    of Washington, 1993
  44. Using Maple in Algebra and Calculus, CCTM Mini Conference, La Junta, 1993
  45. Using Maple in Algebra and Calculus, CCTM Mini Conference, Montrose, 1993
  46. College algebra in context, MAA Rocky Mountain Region, Pueblo, 1995
  47. College algebra in context, AMATYC Conference, Breckenridge, 1995
  48. Stimulating simulations using technology and toys, NCTM, San Diego, 1996
  49. Teaching calculus using Scientific WorkPlace, MAA Rocky Mountain Region, Grand
    Junction, 1996
  50. Using Scientific WorkPlace to teach algebra and calculus, CCTM, Denver, 1996
  51. Using Scientific WorkPlace to teach mathematics, ICTCM, Reno, 1996
  52. Self placement in college mathematics, CCTM, Denver, 1997
  53. Self placement in college mathematics, Mathematics and Science Contest,
    Northeast Junior College, 1998
  54. College algebra reform: Documenting student attitudes and performance, MAA
    Rocky Mountain Region, Alamosa, 1999
  55. Using technology to teach the mathematics of web security and data integrity,
    International Conference of Technology in Collegiate Mathematics, Baltimore,
    2001
  56. Animations That Help Students Construct Knowledge in Mathematics, Invited
    Speaker, Asian Technology Conference in Mathematics, Bangkok, Thailand, 2008

Books, Manuals, and Monographs

  1. Basic Calculus, Brooks/Cole Publishing Company, 1975
  2. Doing Mathematics With Scientific WorkPlace,
    Brooks/Cole Publishing Company, 1995, with C. Walker
  3. Doing Calculus with Scientific Notebook, Brooks/Cole
    Publishing Company, 1997, with C. Walker
  4. College Algebra in Context, published locally for M180
    at CSU, 1994
  5. Surviving Calculus at Colorado State University and actually
    learning to enjoy it, CSU, 1998
  6. Doing Mathematics With Scientific WorkPlace, MacKichan
    Software, 2000, with C. Walker
  7. Applied Algebra: Codes, Ciphers, and Discrete
    Algorithms, Prentice Hall, 2003, with C. Walker
  8. Applied Algebra: Codes, Ciphers, and Discrete
    Algorithms, Prentice Hall, Japanese translation, 2005, with C. Walker
  9. Calculus: Understanding Its Concepts and Methods,
    MacKichan Software, 2006, with F. Richman, C. Walker, and R. Wisner
  10. Precalculus, Hardy Calculus LLC, 2008, with F.
    Richman, C. Walker, and R. Wisner
  11. Business Calculus, Hardy Calculus LLC, 2008, with D.
    Davis, F. Richman, C. Walker, and R. Wisner
  12. Calculus for Advance Placement, Hardy Calculus LLC,
    2008, with F. Richman, C. Walker, and R. Wisner
  13. Applied Algebra: Codes, Ciphers, and Discrete
    Algorithms, Second Edition, CRC Press, 2008, with F. Richman and C.
    Walker

Papers

  1. A note on a paper of Srinivasan, Math. Ann.
    186 (1970), 34–35, with M. Brown and R. Painter
  2. New proof of a basic theorem about the modular group,
    Publ. Math. Debrecen 18 (1971), 109–110, with R. Wisner
  3. An embedding theorem for weakly inverse semigroups,
    Semigroup Forum 2 (1971), 332–335, with M. Brown and R.
    Painter
  4. A dominance semigroup of the modular group, Publ.
    Math. Debrecen 19 (1972), 145–149, with R. Wisner
  5. Cardinalities of D-classes in
    Bn,
    Semigroup Forum 4 (1972), 341–344, with R. Brandon, K.
    Butler, and G. Markowsky
  6. The Schützenberger group of an
    H-class
    of the semigroup of binary relations, Semigroup Forum
    5 (1972), 43–45, with R. Brandon and G. Markowsky
  7. Semilattices of proper inverse semigroups, Semigroup
    Forum 13 (1976), 20–36, with Y. Tirasupa
  8. The maximal regular ideal of the semigroup of binary
    relations, Czech. Math. J. 31 (1981), 194–198, with
    F. Pastijn
  9. Partial orders, closed relations, and their
    automorphisms, Semigroup Forum 22 (1981), 125–138, with M. Thornton
  10. Partial orders and their semigroup of closed
    relations, Semigroup Forum 25 (1982), 171–184, with
    M. Thornton
  11. The intersection of the maximal regular subsemigroups of the
    semigroup of binary relations, Semigroup Forum 29
    (1984), 343–349, with M. Thornton
  12. Semigroup rings which are separable algebras,
    Proceedings Ring Theory Antwerp 1985, Lecture Notes in Mathematics #1197
    (1986), 51–59, Spring Verlag, with F. DeMeyer
  13. The semigroup of binary relations and quasi
    regularity, Semigroup Forum 59 (1999), 8–17, with R.
    Brandon
  14. Binary relations as lattice isomorphisms, Annali di
    Matematica pura ed Applicata 177 (1999), 195–224, with M.
    Petrich
  15. College algebra reform: Documenting student attitudes and
    performance, Promoting Excellence in Teacher Preparation, Rocky
    Mountain teacher Education Collaborative (1999), with K. Chappell

My Erdős number is 3. My Mathematical Geneology can be found at https://genealogy.math.ndsu.nodak.edu/id.php?id=9472