Optimal L(3,2,1)-labeling of trees

Figures & data

Fig. 1 (a) for (C1), (b) for (C2), (c1) and (c2) for (C3) of Theorem 2.3. Throughout, the black dots represent Δ-vertices, the white dots represent $(\Delta -1)$-vertices and the rectangular dots represent any type of vertices.

Fig. 2 (a1), (a2), and (a3) for the three cases of Theorem 2.8.

Fig. 3 A 8-$L(3,2,1)$-labeling of $T_{2,3}$.

Code availability

Not applicable.

Data availability statement

Not applicable.