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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 86z (102d) | Vol. 43z (51d) No. 1 | Year 11AAz (2002d) ▶️



Click to view PDF

Editor: Prof. Jay Schiffman

Cover Title: John Earnest and Chris Harvey, Our web experts, conferring over the Society’ web page

Contents:

  • Minutes of the Annual Board and Membership Meetings — 11A9z (2001d) | Christina Aiello & Alice Berridge
    • Board of Directors Meeting
    • Annual Membership Meeting
      • Treasurer’s Report | Allice Berridge
      • Editor’s Report | Jay Schiffman
      • Annual Meeting Committee | Alice Berridge & Gene Zirkel
      • Nominating Committee | Alice Beridge
      • Other Business
    • Featured Speaker: Jay Schiffman | Number Base Conversion with a Computer Algebra System (Mathematica)
  • An Almost Base Twenty System (Mayan Numerals) | Gene Zirkel
  • Dozenals in the Classroom
  • Jottings
  • Pay DSA Dues Online
  • Go (Dozenal) Metric
  • Errata
  • Problem Corner
  • Crossword Puzzle Solution
  • Why Change?