How the Four-Color Conjecture Was Born

Alexander Soifer
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Alexander Soifer: University of Colorado at Colorado Springs, College of Letters, Arts, and Sciences

Chapter Chapter 19 in The New Mathematical Coloring Book, 2024, pp 185-200 from Springer

Abstract: Abstract It takes time and effort to gain access and read manuscripts. The two letters containing the first mention of the 4CC are of high importance; yet, to the best of my knowledge, their complete facsimiles have never been published before. Selected transcriptions served a purpose, but, as we will see in Sect. 19.2, they contained certain shortcomings. In view of this, I am reproducing here, for the first time, the facsimile of De Morgan’s letter to Hamilton and the relevant fragment of Hamilton’s reply. Seeing – and reading – these letters allows us to immerse in the World Victorian. Analysis of these documents and the corrected transcription of De Morgan’s letter will follow. I am grateful to the Board of Trinity College Dublin, whose kind permission made reproducing these letters ([DeM1] and [Ham]) possible.

Date: 2024
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DOI: 10.1007/978-1-0716-3597-1_19

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