matlactli once (Osu2v)
This notation for the number eleven (11) consists of two groups of five small circles in a horizontal row, plus one more circle above the far right end of the row. Each group of five is connected with a horizontal line along underneath the circles. The circles are painted a light brown or tan color. The equation is 5 + 5 + 1 = 11. It comes from the Codex Osuna, folio 2 recto (Image 6).
Stephanie Wood
This number is part of a larger number that totals 171 and refers to that number of bundles of lime (a tribute item extracted for use in construction). These numbers could be taught as part of a mathematical lesson. The full number has eight flags (tecpantli), each worth 20, for a subtotal of 160. Adding the 11 brings the grand total to 171. It is just a coincidence that the “once” in this number sounds like the Spanish word for eleven. The Nahuatl word is actually “plus one,” part of a construction that is five plus five plus one.
Stephanie Wood
1551–1565
Jeff Haskett-Wood
números, círculos, once, diez, uno, tributos, Nueva España
once
Stephanie Wood
Library of Congress Online Catalog and the World Digital Library, Osuna Codex, or Painting of the Governor, Mayors, and Rulers of Mexico (Pintura del Gobernador, Alcaldes y Regidores de México), https://www.loc.gov/resource/gdcwdl.wdl_07324/. The original is located in the Biblioteca Nacional de España.
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