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The Mayans had several calendars. There was a 365 day civil year, a 260 day religious year and, key to their invention of zero, the complicated Long Count calendar which measured time from the start of the Mayan civilization (August 12, 3113 B.C.) and completes a full cycle on December 21, 2012.
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www.mediatinker.com/blog/archives/008821.html
www.mediatinker.com/blog/archives/008821.html
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Maya numerals - Wikipedia, the free encyclopedia
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The Pre-Columbian Maya civilization used a vigesimal (base-twenty) numeral system. The numerals are made up of three symbols; zero (shell shape), one (a dot) and five (a bar). For example, nineteen (1...
en.wikipedia.org/wiki/Maya_numerals
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0 (number) - Wikipedia, the free encyclopedia
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0 ( zero ) is both a number and the numerical digit used to represent that number in numerals. It plays a central role in mathematics as the additive identity of the integers, real numbers, and man...
en.wikipedia.org/wiki/0_(number)
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Thus each non-zero digit consists of from 0 to 4 dots, and from 0 to 3 lines, and these arrangements, along with the "empty bowl", give representations for every number from 0 to 19. Then they used a "place" system (another impressive invention), with the lowest ... For example, suppose we tip the Mayan numbers over,
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www.mathpages.com/home/kmath080.htm
www.mathpages.com/home/kmath080.htm
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Zero, in arithmetic, is the name of the digit 0, sometimes called nought or, in the past, a cypher. It is used to indicate the absence of quantity. A zero is needed in a positional nu meral system, such as the familiar system commonly used by most people today.
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kangwei1a14.tripod.com/zero.htm
kangwei1a14.tripod.com/zero.htm
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... make claims about the Indian invention of zero which seem to go far too far. .... This was the Maya people who lived in central America, occupying the ...
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www-history.mcs.st-and.ac.uk/HistTopics/Zero.html
www-history.mcs.st-and.ac.uk/HistTopics/Zero.html
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As well as some historians who seem to want to play down the contribution of the Indians in a most unreasonable way, there are also those who make claims about the Indian invention of zero which seem to go far too far. ... You can see a separate article about Mayan mathematics. The brilliant work of the Indian mathematicians...
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www-groups.dcs.st-andrews.ac.uk/~history/HistTopics/Zer...
www-groups.dcs.st-andrews.ac.uk/~history/HistTopics/Zero.html
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Also astonishing are: The mayan calendar which was infinitely more accurate than the Gregorian in use today, the invention of the "zero" in their mathematical system and the development of astronomy and astrology to a high science by charting the movements of the sun, moon and stars.
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victorian.fortunecity.com/tiffany/467/mayancul.htm
victorian.fortunecity.com/tiffany/467/mayancul.htm
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An unknown Mayan scholar is believed to be the first to create a character representing the concept of zero value. ... But then the Mayans, halfway around the world in Central America, independently invented zero in the fourth century CE. The final independent invention of zero in India was long debated by scholars,
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answers.yahoo.com/question/index?qid=20060614063056AATM...
answers.yahoo.com/question/index?qid=20060614063056AATMc76
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