Labelling graphs with a condition at distance 2
SIAM Journal on Discrete Mathematics
Labeling Chordal Graphs: Distance Two Condition
SIAM Journal on Discrete Mathematics
Relating path coverings to vertex labellings with a condition at distance two
Discrete Mathematics
On the $\lambda$-Number of $Q_n$ and Related Graphs
SIAM Journal on Discrete Mathematics
The $L(2,1)$-Labeling Problem on Graphs
SIAM Journal on Discrete Mathematics
On L(d, 1)-labelings of graphs
Discrete Mathematics
Labeling Products of Complete Graphs with a Condition at Distance Two
SIAM Journal on Discrete Mathematics
A Theorem about the Channel Assignment Problem
SIAM Journal on Discrete Mathematics
Labeling Planar Graphs with Conditions on Girth and Distance Two
SIAM Journal on Discrete Mathematics
A bound on the chromatic number of the square of a planar graph
Journal of Combinatorial Theory Series B
Coloring the square of a planar graph
Journal of Graph Theory
An $\mbox{O}(n^{1.75})$ Algorithm for L(2,1)-Labeling of Trees
SWAT '08 Proceedings of the 11th Scandinavian workshop on Algorithm Theory
On backbone coloring of graphs
Journal of Combinatorial Optimization
| Hi-index | 0.04 |
An L(2,1)-labelling of a graph G is an assignment of nonnegative integers to the vertices of G such that adjacent vertices have numbers at least 2 apart, and vertices at distance 2 have distinct numbers. The L(2,1)-labelling number @l(G) of G is the minimum range of labels over all such labellings. It was shown by Griggs and Yeh [Labelling graphs with a condition at distance 2, SIAM J. Discrete Math. 5 (1992) 586-595] that every tree T has @D+1=