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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 98z (116d) | Vol. 4Az (58d) No. 1 | Year 11B5z (2009d) ▶️



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Editor: Michael DeVlieger

Cover Title: Reflections of the DSGB

Contents:

  • President’s Message | Michael DeVlieger
  • Join us for the 11B5z (2009d) Annual Meeting!
  • Minutes of the October 11B4z (2008d) Board Meeting
  • Ralph Beard Memorial Award 11B4z (2008d): Michael DeVlieger
  • An Obituary: Mr. Edmund Berridge
  • Minutes of The October 11B4z (2008d) Membership Meeting
  • A Dozenal Nomenclature | Owen G. Clayton, Ph.D.
    • sem, ..., ten, lem, doz, gross, batch, lot, bilot, trilot
  • Problem Corner | Prof. Gene Zirkel
  • Metric Silliness Continues | Jean Kelly
  • The Mailbag
    • Charles Dale
    • Ray Greaves
    • Dan Dault
    • Dan Simon
  • Save a Tree
  • Reflections of the DSGB: Feature | Prof. Gene Zirkel
  • Some Notes on the History and Desirability of Using Alternate Number Bases in Arithmetic | Chris Osburn
  • Featured Figures → The First 1,000z Digits of π
  • Mathematics and Computer Education (Advertisement)
  • Dozenal Jottings
  • Join the DSA Today!