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arXiv · 2110.09718

A pictorial proof of the Four Colour Theorem

Bhupinder Singh Anand
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Abstract

We give a pictorial proof that transparently illustrates why four colours suffce to chromatically differentiate any set of contiguous, simply connected and bounded, planar spaces; by showing that there is no minimal planar map. We show, moreover, why the proof cannot be expressed within classical graph theory.

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Bhupinder Singh Anand. 2021-10-19. A pictorial proof of the Four Colour Theorem. https://arxiv.org/abs/2110.09718

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