I. Cahit, M. Tezer

An irregular assignement of $G$ is labelling $f: E \ra

\{1,2,...,m\}$ of the

edge-set of $G$ such that all of the induced vertex labels computed as

$\sigma_{v\in e}f(e)$ are distinct. The minimal number $m$ for which this

is possible is called the minimal irregularity strength $s_{m}(G)$ of $G$.

The ...
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