Abstract
Inspired by the Four-Color Conjecture, the Hadwiger–Nelson Problem became one of the famous open problems of mathematics in its own rights. It has withstood all assaults for 65 years, and attracted many mathematicians from many fields, including Paul Erdős and Ronald L. Graham. John F. Nash admired this problem and chose it for the present book. In this chapter we will discuss this problem, its history and generalizations, several of the many related open problems, and the state of the art results.
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Notes
- 1.
Unlike the previous version of this survey [55], more history of the problem and its authorship has been included here.
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Soifer, A. (2016). The Hadwiger–Nelson Problem. In: Nash, Jr., J., Rassias, M. (eds) Open Problems in Mathematics. Springer, Cham. https://doi.org/10.1007/978-3-319-32162-2_14
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DOI: https://doi.org/10.1007/978-3-319-32162-2_14
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