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arXiv · 2110.00036

The equilateral small octagon of maximal width

Christian Bingane·Charles Audet
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Abstract

A small polygon is a polygon of unit diameter. The maximal width of an equilateral small polygon with $n=2^s$ vertices is not known when $s \ge 3$. This paper solves the first open case and finds the optimal equilateral small octagon. Its width is approximately $3.24\%$ larger than the width of the regular octagon: $\cos(\pi/8)$. In addition, the paper proposes a family of equilateral small $n$-gons, for $n=2^s$ with $s\ge 4$, whose widths are within $O(1/n^4)$ of the maximal width.

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Christian Bingane, Charles Audet. 2021-09-30. The equilateral small octagon of maximal width. https://doi.org/10.1090/mcom%2F3733

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