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:

    “It could not have come down to us so far,
    Through the interstices of things ajar
    On the long bead chain of repeated birth,
    To be a bird while we are men on earth,”
    —Robert Frost (1874–1963)