NPR

The decimal point was in use 150 years before previously thought, research shows

NPR's Scott Simon talks to math historian Glen Van Brummelen about his finding that the decimal point appeared in the 1440s, earlier than thought. How did the decimal point come to be? - the dot that ...
Smithsonian Magazine

The Decimal Point Is 150 Years Older Than Previously Thought, Medieval Manuscript Reveals

Math historian Glen Van Brummelen came across decimal points in Giovanni Bianchini's manuscript, Tabulae primi mobilis B. Van Brummelen / Historia Mathematica, 2024 For years, historians thought ...
New Atlas

The invention of the decimal dot that changed mathematics forever

Historians have discovered what may be the world's first decimal point, in an ancient manuscript written 150 years before its next known appearance. There have been many ways to split integers, but ...
WAMC

The decimal point was in use 150 years before previously thought, research shows

How did the decimal point come to be? - the dot that divides whole numbers. Historians are revising its origin story. Glen Van Brummelen studies the history of math and astronomy at Trinity Western ...