Definition
A mathematical object is an abstract concept arising in mathematics. Typically, a mathematical object can be a value that can be assigned to a symbol, and therefore can be involved in formulas. Commonly encountered mathematical objects include numbers, expressions, shapes, functions, and sets. Mathematical objects can be very complex; for example, theorems, proofs, and even formal theories are considered as mathematical objects in proof theory.
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Abstract and concreteAbstract conceptAbstract logicAbstraction (mathematics)Ackermann set theoryAleph numberAlfred North WhiteheadAlgebraic logicAlphabet (formal languages)Analytic philosophyAncient Greek philosophyAndrey Markov (Soviet mathematician)Anna SfardAnne Sjerp TroelstraApplied mathematicsArgumentArithmeticArityAtomic formulaAtomic model (mathematical logic)Atomic sentenceAuthorityAutomata theoryAutomated theorem provingAxiomAxiom of choiceAxiom of infinityAxiom schemaAxiomatic systemAxiomatization of Boolean algebrasBanach–Tarski paradoxBertrand RussellBijectionBinary functionBinary operationBiologyBonnie GoldBoolean algebraBoolean algebras canonically definedBoolean functionBranches of scienceBrouwer–Hilbert controversyCZFCantor's diagonal argumentCantor's paradoxCantor's theoremCardinalityCartesian productCategorical theoryCategory (mathematics)Category of setsCategory theoryChaos theoryChessChurch encodingChurch–Turing thesisClass (set theory)Classical logicCodomainCombinatoricsCompactness theoremComplement (set theory)Complete theoryCompleteness (logic)Complex numbersComputability theoryComputable functionComputable setComputably enumerable setConcrete categoryConcrete objectConservative extensionConsistencyConstructible universeConstruction of the real numbersConstructive analysisConstructive set theoryConstructivism (philosophy of mathematics)Contemporary philosophyContinuum hypothesisContradictionConvenient fictionCountable setDavid HilbertDecidability (logic)Decision problemDeductive systemDiagram (mathematical logic)Differential geometryDomain of a functionElectronElement (mathematics)Elementary diagramElementary equivalenceElementary function arithmeticEmpty setEntityEnumerationEpistemologyEquiconsistencyEquivalence relationErrett BishopEuclid's ElementsEuclidean geometryExceptional objectExistenceExistential quantificationExistential quantifierExpression (mathematics)Extension by definitionsExtension by new constant and function namesExtensionalityFictionalismFinitary relationFinite-valued logicFinite model theoryFinite setFinitismFirst-order logicFixed-point logicForcing (mathematics)Formal LogicFormal grammarFormal languageFormal proofFormal semantics (logic)Formal systemFormalism (philosophy of mathematics)Formation ruleFormulasFoundations of geometryFoundations of mathematicsFour-dimensionalFree logicFree variables and bound variablesFreeman DysonFunction (mathematics)Functional predicateFuzzy setGeneral relativityGeneral set theoryGlossary of mathematical symbolsGottlob FregeGraph of a functionGrothendieck universeGround expressionGround formulaGödel's completeness theoremGödel's incompleteness theoremsGödel numberingHalting problemHartry FieldHenri PoincaréHereditary setHermann WeylHigher-order logicHilary PutnamHilbert's axiomsHilbert's programHilbert spaceHilbert systemHistory of logicHistory of mathematical logicIdealismIdentity (philosophy)Image (mathematics)Impossible objectInaccessible cardinalIndependence (mathematical logic)InferenceInfinite-valued logicInfinite setInformation theoryInhabited setInjective functionIntegersInterpretation (logic)Interpretation (model theory)Interpretation functionIntersection (set theory)IntuitionismIsomorphismJohn P. BurgessKolmogorov complexityKripke's theory of truthKripke–Platek set theoryKurt GödelL. E. J. BrouwerLambda calculusLanguage of mathematicsLarge cardinalLemma (mathematics)Lindström's theoremList of Hilbert systemsList of axiomsList of first-order theoriesList of formal systemsList of mathematical objectsList of mathematical shapesList of mathematical theoriesList of set identities and relationsList of shapesList of statements independent of ZFCList of surfacesList of two-dimensional geometric shapesLogicLogical axiomsLogical biconditionalLogical conjunctionLogical connectiveLogical consequenceLogical constantLogical disjunctionLogical equalityLogical equivalenceLogical truthLogicismLudoLöwenheim–Skolem theoremMany-valued logicMap (mathematics)Material conditionalMathematical and theoretical biologyMathematical knotMathematical logicMathematical physicsMathematical structureMathematicsMetalanguageMetaphysical naturalismMetaphysical realismMetaphysicsMinimal axioms for Boolean algebraModel complete theoryModel theoryModern logicMonadic predicate calculusMonadic second-order logicMorse–Kelley set theoryNP (complexity)Naive set theoryNatural deductionNatural numbersNatural scienceNature (philosophy)NegationNelson GoodmanNew FoundationsNikolai Aleksandrovich ShaninNominalismNon-Euclidean geometryNon-logical symbolNon-standard modelNon-standard model of arithmeticNumberOntological commitmentOntologyOpen formulaOperation (mathematics)Ordinal analysisOrdinal numberOtávio BuenoOxford English DictionaryOxford University PressP (complexity)P versus NP problemParadoxes of set theoryPartition of a setPaul BenacerrafPaul BernaysPaul HalmosPeano axiomsPhilip J. DavisPhilosophy of mathematicsPhysical objectPhysical objectsPhysical worldPhysicsPlanetPlatoPlatonic realmPlatonismPower setPredicate (mathematical logic)Predicate logicPredicate variablePredictionPremisePrime modelPrimitive recursive arithmeticPrimitive recursive functionPrincipia MathematicaProof (mathematics)Proof by contradictionProof of impossibilityProof theoryProperty (philosophy)PropositionPropositional calculusPropositional formulaPropositional variablePure mathematicsQuantifier (logic)Quantifier rankQuantum mechanicsQuine–Putnam indispensability argumentRaphael SanzioRational numbersReal analysisReal numbersRealityRecursionRecursive setRelation (mathematics)Relation (philosophy)Reuben HershReverse mathematicsRobinson arithmeticRoger PenroseRule of inferenceRussell's paradoxSatisfiabilitySaturated modelSchool of thoughtSchröder–Bernstein theoremScienceSecond-order arithmeticSecond-order logicSelf-verifying theoriesSemantic theory of truthSemantics of logicSentence (mathematical logic)Sequent calculusSet (mathematics)Set theoryShapeSignature (logic)Singleton (mathematics)Skolem arithmeticSoundnessSpectrum of a sentenceSpectrum of a theorySquare of oppositionStanford Encyclopedia of PhilosophyStatement (logic)Stewart ShapiroStrength (mathematical logic)String (formal languages)Structuralism (philosophy of mathematics)Structure (mathematical logic)Substitution (logic)Substructure (mathematics)SupertaskSurjective functionSyllogismSymbol (formal)Syntax (logic)T-schemaTarski's axiomatization of the realsTarski's axiomsTarski's theory of truthTarski's undefinability theoremTarski–Grothendieck set theoryTautology (logic)Term (logic)Term logicTesseractThe Foundations of ArithmeticThe School of AthensThe Unreasonable Effectiveness of Mathematics in the Natural SciencesTheoremTheories of truthTheory (mathematical logic)Theory of formsThoughtThree-valued logicTimeline of mathematical logicTransfer principleTransitive setTrefoil knotTrue arithmeticTruth predicateTruth tableTruth valueTuring machineType (model theory)Type theoryUltrafilter (set theory)UltraproductUncountable setUndecidable problemUninterpreted functionUnion (set theory)Uniqueness quantificationUniversal quantificationUniversal setUniverse (mathematics)UrelementValidity (logic)Variable (mathematics)Venn diagramVon Neumann universeVon Neumann–Bernays–Gödel set theoryWell-formed formulaWillard QuineZermelo–Fraenkel set theory
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