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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 91z (109d) | Vol. 46z (54d) No. 2 | Year 11B1z (2005d) ▶️



Click to view PDF

Editor: Prof. Jay Schiffman

Associate Editor: Prof. Gene Zirkel

Contents:

  • President’s Message | Jay Schiffman
  • Reprint: The Do-Re-Mi System of Dozenal Nomenclature: A Trip into the Land of Ever-Ever | Henry Clarence Churchman
  • Another Arithmocrypt | Mary Lloyd
  • Reprint: Aspirant’s Test Number 1
  • Our New Treasurer: Prof. Ellen Trufano, St. John's Univ., Jamaica NY
  • Dozenal Terminology | Ursula Leubner
    • ten, eleven, dozen, gross, cube
  • Announcement of Annual Meeting — 11B1z (2005d)
  • New Web Dozenal Forum: DozensOnline | DSGB (Brian Parry, Robert Carnaghan, Brian Bishop, Shaun Ferguson)
  • Answers to Aspirant’s Test Number 1
  • Jottings
    • Richard Trelfa passed away
    • Ian Patten passed away
    • Ad Multos AnnosL Skip Scifres
  • Arithmocrypt Solution
  • Mail Bag
    • Paul J. M. Sweet | enjoyed Dr. Robert C. Gilles’ article “Let’s Not Go Metric”
    • Robert Carnaghan | DSGB response
    • Jean Kelly | interesting dictionary entry for “duodecimal” on the web
  • New Board Members: John Earnest (VP), Ellen Trufano (Treasurer)
  • Why Change?