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The Four Colour Theorem

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If you have a question about this talk, please contact Kerstin Enright.

Admission to the lecture is free but by ticket only. Please visit the MMP website

How many colours do we need for a map? In other words, if we are colouring in the countries on a map, and we want neighbouring countries to have different colours, how many colours are enough? Map-makers had suspected for a long time that any map could be coloured using just four colours, but was this right?

This talk is part of the Millennium Maths Project public and schools' events series.

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