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Perfect precise colorings of plane semiregular tilings

Manuel Joseph C. Loquias, Rovin B. Santos

Abstract

A coloring of a planar semiregular tiling $\mathcal{T}$ is an assignment of a unique color to each tile of $\mathcal{T}$. If $G$ is the symmetry group of $\mathcal{T}$, we say that the coloring is perfect if every element of $G$ induces a permutation on the finite set of colors. If $\mathcal{T}$ is $k$-valent, then a coloring of $\mathcal{T}$ with $k$ colors is said to be precise if no two tiles of $\mathcal{T}$ sharing the same vertex have the same color. In this work, we obtain perfect precise colorings of some families of $k$-valent semiregular tilings in the plane, where $k\leq 6$.

Perfect precise colorings of plane semiregular tilings

Abstract

A coloring of a planar semiregular tiling is an assignment of a unique color to each tile of . If is the symmetry group of , we say that the coloring is perfect if every element of induces a permutation on the finite set of colors. If is -valent, then a coloring of with colors is said to be precise if no two tiles of sharing the same vertex have the same color. In this work, we obtain perfect precise colorings of some families of -valent semiregular tilings in the plane, where .
Paper Structure (7 sections, 12 theorems, 3 equations, 18 figures)

This paper contains 7 sections, 12 theorems, 3 equations, 18 figures.

Key Result

Lemma 1.1

Let $\mathcal{T}$ be a 3-valent semiregular planar tiling. If a tile of $\mathcal{T}$ has an odd number of edges, then there is no precise coloring of $\mathcal{T}$.

Figures (18)

  • Figure 1: Some semiregular tilings of the plane.
  • Figure 2: Perfect precise 3-coloring of some 3-valent semiregular tilings.
  • Figure 3: Possible color assignments for a perfect precise 4-coloring of the tiling $(p.q.p.q)$.
  • Figure 4: Some perfect precise 4-colorings of the tiling $(p.q.p.q)$.
  • Figure 5: Possible color assignments for a perfect precise 4-coloring of the tiling $(p.4.q.4)$.
  • ...and 13 more figures

Theorems & Definitions (15)

  • Lemma 1.1
  • Lemma 1.2
  • Theorem 1.3
  • proof
  • Lemma 1.4
  • proof
  • Lemma 1.5
  • proof
  • Theorem 1.6
  • Proposition 2.1
  • ...and 5 more