baumhaus.digital/Studium Generale/Prolegomena to Educatio Digitale/Session 3 :: Between Antiquity and Renaissance/modus Indorum :: the method of Indians
9 8 7 6 5 4 3 2 1
With these nine figures, and with the sign 0 which the Arabs call zephir any number whatsoever is written..."
Leonardo Fibonacci of Pisa :: Liber Abaci :: The Book of the Abacus