"Discovery: World's Oldest Decimal Point Found in 1440s Italian Merchant's Notes"

New research reveals that the decimal point was used in 15th-century Italy, 150 years earlier than previously thought. Venetian merchant Giovanni Bianchini's notes from 1440s show the use of decimal points, challenging the belief that German mathematician Christopher Clavius was the first to use them in 1593. Bianchini's work predates Clavius' by a century and a half, suggesting an older tradition of decimal use. This finding sheds light on the history of mathematical notation and its evolution.