It has long been a mystery of Aztec arithmetic: What is three arms plus five bones? Now researchers know: Five hearts. The odd symbols had been noted for centuries; thousands of them appear in Aztec ...

Using written symbols such as hearts, arrows and hands, the ancient Aztecs maintained an arithmetic system that was far more complex than previously understood, scientists said on Thursday. The Aztecs ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

It has long been a mystery of Aztec arithmetic: What is three arms plus five bones? Now researchers know: Five hearts. The odd symbols had been noted for centuries — thousands of them appear in Aztec ...

Drawn in 1540 CE, the Oztoticpac Lands Map despicts property dimensions of lands near Texcoco Sketches of hearts, hands, bones and arrows have been identified as examples of Aztec mathematics, which ...