page_title: Kempe chain
hierarchical_section_title: Kempe chain
caption_attribution_description: English: A graph containing a Kempe Chain consisting of alternating blue and red vertices. Kempe Chains like this one were used in attempts at proving the four color theorem.
context_page_description: In mathematics, a Kempe chain is a device used mainly in the study of the four colour theorem. Intuitively, it is a connected chain of points on a graph with alternating colors.
context_section_description: In mathematics, a Kempe chain is a device used mainly in the study of the four colour theorem. Intuitively, it is a connected chain of points on a graph with alternating colors.
caption: A graph containing a Kempe chain consisting of alternating blue and red vertices
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