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Cartesian productRelationCartesian squareBinary relationDirect sumReal planeProduct ringOrdered pairTupleDirected setAxiom of choiceSemidirect productProductCategorical productTotally ordered setSupersetIntersectionPartial ordering relationBiproductPower setCoproductOrdered setAxiom of pairingTransitive setDirect systemSet theorySet operationPartially ordered setIdealPartitionSet-theoretic differenceN-tupleCountable setCorrespondenceDirect limitDot productOuter productCosetProduct topologyUnionPartial orderSetoidπ-systemTransitive closureClassQuotient setInner productUniversal setArithmetical setSetsDisjoint unionCantor-bendixson theoremPowersetDifference setAxiom of extensionalityTensor productUltraproductSymmetric differenceAbsolute complementSingletonBicrossproductFree groupAlgebraElementDirected graphDisjoint setCardinalityOrderComplementEquivalence classFunctionTransversalLinear orderAxiom of unionEquivalence relationCartesian closed categoryTotal orderAxiom of countable choiceBijectionRelative complementRight cosetRadicalWell-orderVector productInner product spaceKronecker productTotal ordering relationPreorderNull setFamilyCocategoryExtensionalityScalar triple productSmash productDualSurjectionConnectionFree productWordGroup