universally validuniversally valid experssionuniversalsuniverseuniverse of discourseuniverse of discussionuniverse relationunivocalunivocal correspondenceunivocal functionunivocal mappingunknownunknown quantityunlabeledunlikeunlikelyunlimitedunlimited capitalunlimited periodunlimited resource allocationunloadunloadingunloading fixtureunlockingunmixed idealunmixedness theoremunnecessaryunofficial employeeunordered pairunordered partitionunpackunpaintedunpartedunpredictableunproductive expenditureunprovableunprovedunranked dataunraveledunreachable stateunrecorded costunrecorded expensesunrecorded revenueunrecorded variableunrelatedunrelated variableunrestrictedunrestricted random sampleunrestricted variableunrestricted variables
