Graphs, Colourings and the Four-Colour Theorem Orie Yamada social bookmarking

social bookmarking

Auditors claim to have moved beyond issues of compliance and regularity and to be able directly to investigate the efficiency and effectiveness of public programmes

Particular emphasis is given to

Richard Sgroi

Graphs, Colourings and the Four-Colour Theorem Orie Yamada social bookmarkingThe four colour theorem is one of the famous problems of mathematics, that frustrated generations of mathematicians from its birth in 1852 to its solution (using substantial assistance from electronic computers) in 1976. The theorem asks whether four colours are sufficient to colour all conceivable maps, in such a way that countries with a common border are coloured with different colours. The book discusses various attempts to solve this problem, and