🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsРусский한국어中文日本語EntityQ1055314· pop 12· linked from 56 articlesumbral calculushistorical term in mathematicsAvailable in 12 languagesEspañolFrançaisDeutsch日本語РусскийPortuguêsItalianoCatalanGalicianPolski한국어Connectionsfinite differenceEntityEric Temple BellEntityCategoriesCombinatoricsFinite differencesPolynomials