EntityQ1503766· pop 19· linked from 280 articlesnonstandard analysisSign in to savealternative formulation of calculus using a logically rigorous notion of infinitesimal numbersConnectionsmathematical analysisEntitylimit of a functionEntitymodel theoryEntityCours d'AnalyseEntityIsaac NewtonPersonGottfried Wilhelm LeibnizEntityLeonhard EulerEntityInternational Standard Book NumberEntitynatural numberEntityWayback MachineEntityPierre de FermatEntityGeorge BerkeleyEntitydigital object identifierEntityAugustin-Louis CauchyEntityabsolute valueEntityhistory of mathematicsEntityBrownian motionEntitymetric spaceEntityHilbert spaceEntityisomorphismEntityCategoriesInfinityNonstandard analysisReal closed field