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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 www.mmp.maths.org

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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