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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 58z (68d) | Vol. 30z (36d) No. 3 | Year 1197z (1987d) ▶️



Click to view PDF

Editor: Dr. Patricia Zirkel

Cover Title: Two Subroutines

Contents:

  • Schedule, 1987 Annual Meeting
  • Constitution Change Passes
  • An Accuracy Scale | Fred Newhall
  • Dozenal Nude Numbers | Jean Kelly
    • Definition: nude = every digit is a factor
    • The Degree of a Nude Number
    • Large Nude Number
    • Consecutive Nude Numbers
  • Two FORTRAN Subroutines for Base Conversion | Nassau Communitiy College students
    • A Subroutine to Convert from Base Twelve to Base Ten | Brian Doherty
    • A Subroutine to Convert from Base Ten to Base Twelve | Regina DeBonis
  • Dozenal Jottings
    • Paul Rapoport
      • letter from Don Hammond, DSGB | dozenal clock
      • disagrees with Igor Valevsky about 2 dozen hours, prefers 1 dozen to be pure dozenal metric
    • Nelson Gray
    • Dean Koonts | Strangers | novel with a dozenal reference near the end
    • Gene and Pat Zirkel | visited Dudley and Kay George in Seattle
    • Father Joachim Watrin, D.S.B. passed away
  • Dek and El
  • Cinderella Dek-El-Do | a poem | Henry Churchman
  • Why Change?
  • Counting in Dozens