Ahli matematika miwah sejarawan B. L. van der Waerden ngaturang papineh yéning Buku VII mawit saking buku pangénter indik teori wilangan sané kasurat olih ahli matematika ring aliran Pythagoras.
The mathematician and historian B. L. van der Waerden suggests that Book VII derives from a textbook on number theory written by mathematicians in the school of Pythagoras.