Los puntos clave no están disponibles para este artículo en este momento.
Abstract The n‐cube is characterized as a connected regular graph in which for any three vertices u, v , and w there is a unique vertex that lies simultaneously on a shortest ( u, v )‐path, a shortest ( v, w )‐path, and a shortest ( w, u )‐path.
Henry Martyn Mulder (Sat,) studied this question.