🌐EnglishEnglishDeutschFrançaisРусский日本語EntityQ2993335· pop 9· linked from 11 articlesSingmaster's conjectureconjecture in combinatorial number theoryAvailable in 9 languagesFrançaisDeutsch日本語РусскийBanglaCatalanGreekUkrainianvia Wikidata sitelinks · CC0Connectionsdigital object identifierEntityPaul ErdősEntityCategoriesCombinatoricsConjecturesFactorial and binomial topicsTriangles of numbersUnsolved problems in number theory