Kempe Chain

In mathematics, a Kempe chain is a device used mainly in the study of the four colour theorem.

Read more about Kempe Chain:  History, Formal Definition, Other Applications

Famous quotes containing the word chain:

    “Oh yes, that’s right. They chain up wild animals. That’s all I am, an animal.”
    —John Elder [Anthony Hinds], British screenwriter, and Terence Fisher. Leon (Oliver Reed)