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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.

Questioning with a Smile as the World Wakes up from History

As the Berlin Wall comes down and the Cold War world melts away, the Dozenal Society of America continues in its peaceful examination and exposition of the qualities of base twelve. Dr. Impagliazzo explores music and the dozen, a topic John D. Hansen, Jr. returns to later. The long hundred, conveyed twice by Jens Ulff-Møller, PhD., fascinates those gathered at Nassau Community College in 1991 and 1992. Gene Zirkel’s “Binary Coded Digits”, describing Bill Schumacher’s seven-segment digits, thrills Don Hammond across the pond, and like-minded dozenalist fans of the LCD display-style numerals. Mr. Charles Trigg passes away, yet leaves a legacy of articles published postmortem which celebrate dozenal recreational mathematics. Mr. Churchman’s 1975 summation of his “metronic” system of weights and measure finally appears in Vol. 34; No. 3. The Society continues to meet annually, and Dozenal Jottings continue to pour in. The sustained dozenal “peace”, the eager questioning with a smile, continues into the nineties.