L Mol, MJH Murphy, OR Oellermann - arXiv preprint arXiv:2002.11048, 2020 - arxiv.org
Let $ G $ be a graph, and let $ u $, $ v $, and $ w $ be vertices of $ G $. If the distance
between $ u $ and $ w $ does not equal the distance between $ v $ and $ w $, then $ w $ is …