On graceful difference labelings of disjoint unions of circuits

A graceful difference labeling (gdl for short) of a directed graph G with vertex set V is a bijection f : V → {1,. .. , |V|} such that, when each arc uv is assigned the difference label f (v) − f (u), the resulting arc labels are distinct. We conjecture that all disjoint unions of circuits have a gd...

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Veröffentlicht in:	Open Journal of Discrete Applied Mathematics 2019-12, Vol.2 (3), p.38-55
Hauptverfasser:	Hertz, Alain, Picouleau, Christophe
Format:	Artikel
Sprache:	eng
Schlagworte:	Combinatorics Computer Science Data Structures and Algorithms Discrete Mathematics Mathematics
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