Qi of Xia Qi of Xia Qi () was a Chinese king, the son of Yu the Great and the second sovereign of the Xia Dynasty. He ruled for approximately nine or ten years. Qi's father, Yu the Great also the founder of the Xia dynasty married Nu Jiao and had Qi. Qi was not to be the next emperor but due to public pressure Qi was chosen as Yu's successor beginning the dynastic tradition. Later Qi had a son named Tài Kāng who also became the next emperor. Yu died 45 years into his reign. After Qi's rule, Qi's son Tai Kang
What Is Mathematics? Expectations" by Charles Dickens. According to Constance Reid, Courant finalized the title after a conversation with Thomas Mann. What Is Mathematics? What Is Mathematics? is a mathematics book written by Richard Courant and Herbert Robbins, published in England by Oxford University Press. It is an introduction to mathematics, intended both for the mathematics student and for the general public. First published in 1941, it discusses number theory, geometry, topology and calculus. A second edition was published in 1996 with an additional chapter on recent progress in mathematics, written by Ian Stewart. The book was based on Courant's course material. Although