<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Hindu--Arabic numeral system (also called the Arabic numeral system or Hindu numeral system) is a positional decimal numeral system that is the most common system for the symbolic representation of numbers in the world . It was an ancient Indian numeral system which was re-introduced in the book On the Calculation with Hindu Numerals written by the medieval - era Iranian mathematician and engineer al - Khwarizmi, whose name was latinized as Algoritmi . The system later spread to medieval Europe by the High Middle Ages . </P> <P> The system is based upon ten (originally nine) different glyphs . The symbols (glyphs) used to represent the system are in principle independent of the system itself . The glyphs in actual use are descended from Brahmi numerals and have split into various typographical variants since the Middle Ages . </P>

What hindu author is credited with the development of the decimal system