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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 37z (43d) | Vol. 1Bz (23d) No. 2 | Year 1180z (1968d) ▶️



Click to view PDF

Editor: Jamison “Jux” Handy, Jr.

Associate Editor: Henry Churchman

Contents:

  • Chromatic Musical Scales and Notations | Erich Kothe
    • Part One: Hearing and Sound
  • Counting and Tallying | B. A. M. Moon
  • Our Miserable Mess of Measures? by Henry C. Churchman
  • More Evidence of Base Twelve Economy | Tom Linton
  • Conversion of Decimal Constants | Stan Bumpus
    • Pi equals, duodecimally
    • Euler’s constant equals, duodecimally
    • Knintchine’s constant equals, duodecimally
    • e equals, duodecimally
    • 1/e equals, duodecimally
  • Number-Base Oddments | Shaun Ferguson
  • More on Douze Notre Dix Futur, work of Jean Essig
  • Exhibit of Computer Program | Robert McPherson
  • Excerpts from Letters and Comments
    • Ralph M. Beard
    • Brian K. Bishop
    • Stan Bumpus
    • Thomas H. Goodman
    • F. Emerson Andrews
    • George S. Terry
    • S. Ferguson
  • Dedicated to an Unknown English Mathematician | Henry C. Churchman
  • Counting in Dozens