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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 55z (65d) | Vol. 2Bz (35d) No. 3 | Year 1196z (1986d) ▶️



Click to view PDF

Editor: Dr. Patricia Zirkel

Cover Title: Schedule—1986 Annual Meeting

Contents:

  • Schedule—1986 Annual Meeting
  • Two-Way Numbers | Cedric Smith
  • Book Review | Jerry Brost.
    • TGM: A Coherent Dozenal Metrology based on Time, Gravity & Mass | Tom Pendlebury, DSGB
  • Book Review | Gene Zirkel
    • The American Metric Journal
  • An Answer | Jean Kelly
    • “radix” as generic word for “10” in any base
    • “radix squared” as generic for “100”
    • “radix cubed” as generic for “1000”
    • “ten” through “fifteen” for “A” through “F”
  • Program to Convert to Base Twelve | Bruce Newhall
  • Dozenal Jottings
    • Charles Dale | recommends “Dek-Dek” as name of panda mascot
    • Jerry Brost
    • Don Hammond
    • Bill Schumacher
    • Fred Newhall
    • Cedric Smith
    • Dick Trelfa
    • John Selfridge & David Singmaster | Eugene Strens Memorial Converence on Intuitive and Recreational Mathematics and its History
    • Emily K. Lovell & Robert E. Lovell
    • Charles F. Marschner
    • Elaine Seelbach Renstrom re Lewis Carl Seelbach
    • Faye Russell
    • Robert McPherson
    • Jamison Handy
    • Valo A. Mueleje, Esperanto enthusiast
    • Joy M. Heine
    • Dr. Sharon Whitton Ayers
  • Number Bases Elsewhere, part II
    • “A Babylonian Geometric Algebra” | James K. Bidwell | The College Mathematics Journal | uses the semicolon to indicate Babylonian fractions
  • Sexist Language (continued) | Patricia Zirkel
    • Handbook of Nonsexist Writing | Casey Miller & Kate Swift | “fellow” considered gender-neutral
  • Why Change?
  • Counting in Dozens