At Least One -- from Wolfram MathWorld

"At least one" is a mathematical term meaning one or more. It is commonly used in situations where existence can be established but it is not known how to ... Algebra AppliedMathematics CalculusandAnalysis DiscreteMathematics FoundationsofMathematics Geometry HistoryandTerminology NumberTheory ProbabilityandStatistics RecreationalMathematics Topology AlphabeticalIndex NewinMathWorld HistoryandTerminology Terminology RecreationalMathematics MathematicsintheArts MathematicsinLiterature TheCuriousIncident oftheDogintheNight-Time RecreationalMathematics MathematicalHumor AtLeastOne "Atleastone"isamathematicaltermmeaningoneormore.Itiscommonlyusedinsituationswhereexistencecanbeestablished butitisnotknownhowtodeterminethetotalnumberofsolutions. OneofthethreejokesknowntoChristopher,theprotagonistinthenovelTheCuriousIncidentoftheDogintheNight-Time,concernstheprecisenesswith whichmathematiciansapplytheterm"atleastone."AstoldbyChristopher (Haddon2003,p. 142),thejokerunsasfollows."Therearethreemenon atrain.Oneofthemisaneconomistandoneofthemisalogicianandoneofthem isamathematician.AndtheyhavejustcrossedtheborderintoScotland(Idon't knowwhytheyaregoingtoScotland)andtheyseeabrowncowstandinginafield fromthewindowofthetrain(andthecowisstandingparalleltothetrain).And theeconomistsays,'Look,thecowsinScotlandarebrown.'Andthelogiciansays, 'No.TherearecowsinScotlandofwhichatleastoneisbrown.'Andthemathematician says,'No.ThereisatleastonecowinScotland,ofwhichonesideappearstobe brown.'Andthisisfunnybecauseeconomistsarenotrealscientistsandbecause logiciansthinkmoreclearly,butmathematiciansarebest." SeealsoExactlyOne,Existence, Iff,PreciselyUnless ExplorewithWolfram|Alpha Morethingstotry: {25,35,10,17,29,14,21,31} cbrt(3) kurtosis{21.3,38.4,12.7,41.6} ReferencesHaddon,M.TheCuriousIncidentoftheDogintheNight-Time.NewYork:Vintage,2003.Referenced onWolfram|AlphaAtLeastOne Citethisas: Weisstein,EricW."AtLeastOne."From MathWorld--AWolframWebResource.https://mathworld.wolfram.com/AtLeastOne.html Subjectclassifications HistoryandTerminology Terminology RecreationalMathematics MathematicsintheArts MathematicsinLiterature TheCuriousIncident oftheDogintheNight-Time RecreationalMathematics MathematicalHumor Created,developedandnurturedbyEricWeissteinatWolframResearch