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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 69z (81d) | Vol. 34z (40d) No. 3 | Year 119Bz (1991d) ▶️



Click to view PDF

Editor: Dr. Patricia Zirkel

Cover Title: Conducting the business of the 1990 DSA Annual Meeting

Contents:

  • Schedule of the Annual Meeting — 119Bz (1991d)
  • The Remarkable Prime Numbers | Jay Schiffman
  • A Base Puzzle | Andrew Hodges
  • General Sherman on Twelves | H.K. Baumeister
  • The Metrons Are Coming | Henry C. Churchman
  • Number Bases and Scientific Notation | Gene Zirkel
  • In a Perfect World — Solution
  • Base Twelve Crossnumber Puzzle — Solution | Charles Ansbacher
  • Twelve Months in a Year | Jean Kelly
  • Book Review | Jean Kelly
    • The Mote in Gods Eye | Larry Niven & Jerry Pournelle
  • Dozenal Jottings | From Members and Friends
    • New Members: Al Stanger, Harold M. Stein, Dr. John A. Schumaker
  • The Short and the Long of It | Gene Zirkel
  • Japan Comes Back! | Gene Zirkel
  • Why Change?
  • Counting in Dozens