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 ...

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 ...

The Aztecs, an empire in central Mexico toppled by Spanish invaders in 1519, has long been recognized for its sophistication in architecture, engineering, astronomy and other fields. And the new ...

JANESVILLE, Wis., April 4 (UPI) -- A study by U.S. and Mexican researchers has found evidence of an ancient method of arithmetic in Aztec property records. Barbara Williams of the University of ...

WASHINGTON (Reuters) - 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 ...