🌐EnglishEnglishDeutschFrançaisTiếng ViệtРусский日本語EntityQ1386718· pop 7· linked from 21 articlesgraceful labelingassignment of integer labels to the vertices of a graph that uniquely identifies edges by the difference of their endpoint labelsWikidata factsImageGraceful labeling.svgvia Wikidata · CC0Available in 7 languagesFrançaisDeutschРусскийEstonianTiếng ViệtUkrainianvia Wikidata sitelinks · CC0ConnectionsgraphEntityintegerEntityCategoriesConjecturesGraph theory objects