System used by the ancient Mayan civilization to represent numbers and dates
400s
20s
1s
33
429
5125
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The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization. It was a vigesimal (base-20) positional numeral system. The numerals are made up of three symbols: zero (a shell),[citation needed] one (a dot) and five (a bar). For example, thirteen is written as three dots in a horizontal row above two horizontal bars; sometimes it is also written as three vertical dots to the left of two vertical bars. With these three symbols, each of the twenty vigesimal digits could be written.
Numbers after 19 were written vertically in powers of twenty. The Mayan used powers of twenty, just as the Hindu–Arabic numeral system uses powers of ten.[1]
For example, thirty-three would be written as one dot, above three dots atop two bars. The first dot represents "one twenty" or "1×20", which is added to three dots and two bars, or thirteen. Therefore, (1×20) + 13 = 33.
(1×20)
+
13
=
33
Upon reaching 202 or 400, another row is started (203 or 8000, then 204 or 160,000, and so on). The number 429 would be written as one dot above one dot above four dots and a bar, or (1×202) + (1×201) + 9 = 429.
(1×202)
+
(1×201)
+
9
=
429
Other than the bar and dot notation, Maya numerals were sometimes illustrated by face type glyphs or pictures. The face glyph for a number represents the deity associated with the number. These face number glyphs were rarely used, and are mostly seen on some of the most elaborate monumental carvings.
There are different representations of zero in the Dresden Codex, as can be seen at page 43b (which is concerned with the synodic cycle of Mars).[2] It has been suggested that these pointed, oblong "shell" representations are calligraphic variants of the PET logogram, approximately meaning "circular" or "rounded", and perhaps the basis of a derived noun meaning "totality" or "grouping", such that the representations may be an appropriate marker for a number position which has reached its totality.[3]
^Saxakali (1997). "Mayan Numerals". Archived from the original on 2006-07-14. Retrieved 2006-07-29.
^"Codex Dresdensis - Mscr.Dresd.R.310". Saxon State and University Library (SLUB) Dresden.
^David Stuart (June 15, 2012). "The Calligraphic Zero". Maya Decipherment: Ideas on Maya Writing and Iconography -- Boundary End Archaeological Research Center. Retrieved Mar 11, 2024.
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