Nicomachus is said to have flourished around the end of the first century AD. Little is known of his family or private life. He appears to have been a Pythagorean and is credited with having written a Life of Pythagoras although this has not survived. Nicomachus wrote Introduction to Arithmetic, the first work to treat arithmetic as a separate field of study from geometry and also introduced the first multiplication table. The work became the standard arithmetic text until the 12th century. He also wrote a work on music, Manual of Harmonics and has been credited with The Theology of Numbers, although the latter is disputed by many authorities..
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Introduction to Arithmetic [Illustrated]
c. 100 AD
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