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Dozenal Society of America
Promoting base twelve and alternative base mathematics
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The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

The Duodecimal Bulletin

◀️ Issue: Whole Number 57z (67d) | Vol. 30z (36d) No. 2 | Year 1197z (1987d) ▶️



Click to view PDF

Editor: Dr. Patricia Zirkel

Cover Title: Doman Numerals

Contents:

  • Doman Numerals | Gerard Robert Brost
  • Same Numeral/Different Number | Gene Zirkel
  • Book Reviews | Jean Kelly
    • Elementary Numerical Analysis | W. Allen Smith | Prentice-Hall, 1986
    • Realities of Metrication, A Report | The International Brotherhood of Electrical Workers
    • A Metric America, A Decision Whose Time Has Come | The National Bureau of Standards
  • Duodecimal Constants | Igor C. Valevski
  • Constitution Change | Ballot
  • Funny Coincidence | Bjarke Nielsen
  • Prime Endings
  • Duodecimal Test (part III)
  • Dozenal Jottings
    • Gene Zirkel | won competition by Abacus computer publication to devise a Turing Test
    • Dezhon | denounces Bell-Tone digits, prefers Pitmans
    • Arthur Whillock, DSGB | notified that Tom Pendlebury passed away
    • Theodore Baumeister passed away
    • Lorraine Katz
    • Skip Scifres, Henry Churchman, Thomas M. O’Neill
    • Paul Adams
      • Rae Charles Eltsa
      • Jay Schiffman
      • Joseph U. Alohan
      • Matthew J. Weitendorf
      • H. K. Baumeister
      • Robert P. White
      • Arthur L. Woerner
    • New members
  • Twelves | Answers
  • Why Change?
  • Counting in Dozens