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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.
http://www.dozenal.org/../sites_bck/default/files/db4a205_0.pdf

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.
© 11E9-1205 (decimal 2013-2021). The Dozenal Society of America. Contact Us
Creative Commons License
This website and the documents on it are licensed under a Creative Commons Attribution 3.0 Unported License.
Numeration on this site is in dozenal (also called duodecimal, or base twelve), using "X" for ten and "E" for eleven.
0 1 2 3 4 5 6 7 8 9 X E 10 11 12 13 14 15 16 17 18 19 1X 1E 20 21 22...
PDF documents may use a Dwiggins stylized "X" and "E" or the Pitman inverted "2" and "3".
The Humphrey point, or semicolon, is used for fractional parts; e.g., "0;6 = 0.5."