On August 8, 1900, at the second International Congress of Mathematicians in Paris, David Hilbert delivered his famous lecture in which he described twenty-thre

In 2000, the Clay Foundation of Cambridge, Massachusetts, announced a historic competition: Whoever could solve any of seven extraordinarily difficult mathemati

Henri Poincaré was one of the greatest mathematicians of the late nineteenth and early twentieth century. He revolutionized the field of topology, which studie

Since it was first published three decades ago, Excursions Into Mathematics has been one of the most popular mathematical books written for a general audience.

This book presents visions of how to solve social problems in the 21st century and how programs SHOULD be evaluated, not how they will be evaluated.