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The proof of Steinberg's three coloring conjecture

I. Cahit
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Abstract

The well-known Steinberg's conjecture asserts that any planar graph without 4- and 5-cycles is 3 colorable. In this note we have given a short algorithmic proof of this conjecture based on the spiral chains of planar graphs proposed in the proof of the four color theorem by the author in 2004.

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I. Cahit. 2006-07-20. The proof of Steinberg's three coloring conjecture. https://arxiv.org/abs/math/0607497

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