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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 45z (53d) | Vol. 27z (31d) No. 3 | Year 1192z (1982d) ▶️



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Editor: Patricia Zirkel

Contents:

  • Symbols—A Plea for Uniformity | Arthur Whillock
  • An Important Announcement
  • A Dozen Properties of the Number Twelve | Jay Schiffman
  • Dues to Rise?
  • Calendar Reform | Jean Kelly
  • A Base of Five Dozens?
  • A Recursive Operation on Two-Digit Duodecimal Integers | Charles W. Trigg
  • Annual Meeting of 1978
    • Review of past elections of the Board of Directors
    • Election of Officers
    • Discussion of Agenda
  • Annual Meeting of 1979
    • Election of Officers
    • Discussion of Agenda
    • Speakers
      • An Introduction to Dozens | James Malone
      • An Idea Whose Time Has Come | Gene Zirkel
      • Dr. Anton Glaser | ideas from A History of Binary and Other Nondecimal Notation
      • Henry Churchman | dozenal metric vs decmial metric
  • Symbolically Speaking | Solution
  • Dozenal Jottings | From Various Members
    • Charles S. Bagley
    • Nationwide Coverage followup
    • Don Hammond, editor DSGB Journal
  • Puzzle Corner | For or Mo’
  • Why Change?
  • Counting in Dozens