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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 Opposed Principles

Title: The Opposed Principles
Author: Ralph Beard
Year: 1161
Subject: Article originally distinguishing "least change' and "separate identity" symbologies.

The first Editor of the Duodecimal Bulletin outlines two basic approaches to the design of numerals, the “Least Change” and the “Separate Identity”. This article serves as the basis for the Symbology Issues of 11E6 and the Dozenal Society of America’ policy on numerals.