Liberation of Belgium Second Army captured Antwerp, the port city on the river Scheldt in northern Belgium, close to the Netherlands, on 4 September as well. In the following days and weeks, the Battle of the Scheldt claimed many lives, as the port of Antwerp could not be operated effectively without control of the Scheldt estuary. Antwerp was the first port to be captured by the Allies in near perfect condition, making it very valuable, especially with its deep water facilities. On 6 September, the 4th Canadian Armoured Division crossed the border with Belgium and took areas around Ypres and Passchendaele. Between 9
What Is Mathematics? 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 Robbins assisted in writing a large part of the book, he had to fight for authorship. Nevertheless, Courant