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arXiv · 1412.5096

Multiple Lattice Packings and Coverings of the Plane with Triangles

Kirati Sriamorn
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Abstract

Given a convex disk $K$ and a positive integer $j$, let $δ_L^j(K)$ and $\vartheta_L^j(K)$ denote the $j$-fold lattice packing density and the $j$-fold lattice covering density of $K$, respectively. I will prove that for every triangle $T$ we have that $δ_L^j(T)=\frac{2j^2}{2j+1}$ and $\vartheta_L^j(T)=\frac{2j+1}{2}$. Furthermore, I also obtain that the numbers of lattices which attain these densities both are $(2j+1)\prod_{p|2j+1}(1-\frac{2}{p})$, where the product is over the distinct prime numbers dividing $2j+1$.

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Kirati Sriamorn. 2014-12-21. Multiple Lattice Packings and Coverings of the Plane with Triangles. https://arxiv.org/abs/1412.5096

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