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Minimal Polynomials for the Coordinates of the Harborth Graph

Eberhard H. -A. Gerbracht
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Abstract

The Harborth graph is the smallest known example of a 4-regular planar unit-distance graph. In this paper we give an analytical description of the coordinates of its vertices for a particular embedding in the Euclidean plane. More precisely, we show, how to calculate the minimal polynomials of the coordinates of its vertices (with the help of a computer algebra system), and list those. Furthermore some algebraic properties of these polynomials, and consequences to the structure of the Harborth graph are determined.

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BibTeXRIS

Eberhard H. -A. Gerbracht. 2007-01-24. Minimal Polynomials for the Coordinates of the Harborth Graph. https://arxiv.org/abs/math/0609360

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