Saturday, April 30, 2011

Question 1101: Tetrapacked!

X is a theorem which is yet to be proved, although it is one of the major theorems to have a computer-assisted proof (not counted as a REAL proof). It was first put forward by Francis Guthrie, whose brother then took it to De Morgan.

Illustrations of the theorem:




Answer: Four Coloured Theorem. It states that any planar graph/map can be filled with a minimum four colours such that no two adjacent spaces are filled with the same colour. In short, see the pics.


13 Answers:

wheelsandwings said...

4-color theorem

pranav said...

something like all the countries in a continent can be coloured using 4 colours such that no colour is next to each other.

Ruhi shirodkar said...

Four colour theorem

prashanth said...

4 colour theorem...

indian said...

four colour problem.

Rahul Varma said...

Even though I see A lot of colours I would like to go on with a FOUR COLOURED THEOREM

Amit Dandekar said...

Four color theorem

Adi said...

Four colour theorem?

Siddarth Pai said...

4 colours theorem

Stumbler said...

The four colour map theorem - the problem of shading all the countries on a map using just 4 colours while ensuring that no two adjacent countries are shaded with the same hues.

Vasudev said...

4 colour theorom?

Tejas said...

Four color theorem

Fahad said...

Was asked in TIIF Quiz '10....

#nostalgia :)