Adelard of Bath
Adelard of Bath (; 1080 1152 AD) was a 12th-century English natural philosopher. He is known both for his original works and for translating many important Arabic and Greek scientific works of astrology, astronomy, philosophy and mathematics into Latin from Arabic versions, which were then introduced to Western Europe. He is known as one of the first to introduce the Arabic numeral system to Europe. He stands at the convergence of three intellectual schools: the traditional learning of French schools, the Greek culture of Southern Italy, and the Arabic science of the East.
Eastern Arabic numerals
The numeral system originates from 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 Khwarazmi, whose name was Latinized as "Algoritmi".