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
Cesar-Ranchería Basin Guajira Basin and Middle Magdalena Valley respectively. The basin has a general orientation of 30 degrees from north. The Cesar-Ranchería Basin is subdivided into the Cesar Basin in the west, named after and hydrographically dominated by the Cesar River in the Magdalena River watershed, and the Ranchería Basin in the east. The latter is named after the Ranchería River flowing towards the Caribbean Sea and separated from the Cesar River by the intrabasinal Valledupar High, an extension of the Verdesia High. The southeastern edge of the basin is formed by the border with Venezuela. In total, the basin covers an