ancient chinese mathematicians, cao yuanli, divination, yuan hongyu

Ancient Chinese Mathematicians With the Power of Divination (Part 2)

In the first part of this article, we encountered mathematician Zhao Da’s magical ability to use arithmetic to deduce and derive “impossible” hidden factors and their quantity down to the tiniest number. Looking into more accounts and records, we can feel that the ancients, particularly before the Song Dynasty, regarded mathematics as we know it ...

Michael Segarty

Moon phases and the lunar cycle in the night sky.