The problem is simply stated, and involves the colouring of maps. Can every map be coloured with at most four colours so that neighbouring countries are coloured differently?
First posed 150 years ago, it took more than a century of colouring maps and developing the necessary theoretical machinery before the result was established with certainty. Even then, difficult philosophical questions remained.
With elegance and clarity, Robin Wilson explains the problem and the proof.
- ISBN10 0713996706
- ISBN13 9780713996708
- Publish Date 7 November 2002
- Publish Status Out of Print
- Out of Print 14 August 2003
- Publish Country GB
- Publisher Penguin Books Ltd
- Imprint Allen Lane
- Format Hardcover
- Pages 288
- Language English