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Recently-unearthed
have excited mathematicians
. The records of a
who lived in Venice in the 1440s show a decimal point. Historians say this find is
because it means the decimal point is 150 years older than was
thought. The merchant was also an
. He made many
of the heavens. He also wrote
based on calculations of how the stars and
aligned. A mathematician noticed the decimal point in one of the merchant's
that was written between 1441 and 1450.
