Four colour theorem | Four color theorem (englanti)
Etsi sanaa " Four colour theorem " OR " Four color theorem " NRICH | PLUS | maths.org | Googlella
Määritelmä taso 3
Any network of points and lines in a plane can be coloured in using no more than four colours, in such a way that no two adjacent regions have the same colour.
Suhteet
- yleisempi:
- (en) Theorem
- katso myös:
- (en) Four colour problem
- (en) Seven colour theorem
Rahoittajat: EU Socrates Minerva, HeyMath!, Cambridge University Press