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math.CO2021
Cordiality of Digraphs
Leroy Beasley, David Brown, Jonathan Mousley +1
A -labelling of a set is said to be {\em friendly} if approximately one half the elements of the set are labelled 0 and one half labelled 1. Let be a labelling of the ed…
math.CO2020
(2,3)-Cordial Oriented Hypercubes
Jonathan M. Mousley, Manuel A. Santana, LeRoy B. Beasley +1
In this article we investigate the existence of (2,3)-cordial labelings of oriented hypercubes. In this investigation, we determine that there exists a (2,3)-cordial oriented hyper…
math.CO2020
(2,3) Cordial Trees and Paths
Manuel Santana, Jonathan Mousley, David Brown +1
Recently L. B. Beasley introduced -cordial labelings of directed graphs in [1]. He made two conjectures which we resolve in this article. He conjectured that every orientati…