One in a Krillion +100Tropical geometryNamed for Brazil-based Imre Simon, it flattens curves into piecewise lines.Deep Cut +85Abelian group theoryAbsolute geometryAbstract analytic number theoryAbstract differential geometryAbstract harmonic analysisAdditive combinatoricsAdditive number theoryAffine differential geometryAffine geometryAhlfors theoryAlgebraic analysisAlgebraic combinatoricsAlgebraic graph theoryAlgebraic K-theoryAlgebraic logicAlgebraic number theoryAlgebraic statisticsAlgebraic topologyAlgorithmic information theoryAnabelian geometryAnalysis on metric spacesAnalytic combinatoricsAnalytic number theoryAnalytic theory of L-functionsApplied probabilityApproximation theoryArakelov geometryArithmetic combinatoricsArithmetic dynamicsArithmetic geometryArithmetic topologyAsymptotic analysisAuslander–Reiten theoryAutomata theoryBayesian statisticsBifurcation theoryBirational geometryC*-algebra theoryCalculus of moving surfacesCalculus of variationsCatastrophe theoryCategorical logicCharacter theoryChemical graph theoryChemical reaction network theoryClass field theoryClifford analysisClifford theoryCobordism theoryCoding theoryCohomology theoryCombinatorial commutative algebraCombinatorial design theoryCombinatorial game theoryCombinatorial group theoryCombinatorial optimizationCombinatory logicCommutative algebraComplex algebraic geometryComplex analytic geometryComplex differential geometryComplex dynamicsComplex geometryComputability theoryComputable analysisComputable model theoryComputational algebraic geometryComputational complexity theoryComputational geometryComputational group theoryComputational mathematicsComputational number theoryComputational statisticsComputational synthetic geometryComputational topologyComputer algebraConformal geometryConstructive analysisConstructive function theoryConstructive mathematicsConstructive set theoryContact geometryControl theoryConvex analysisConvex geometryConvex optimizationCR geometryCredibility theoryDecision analysisDecision theoryDerived noncommutative algebraic geometryDescriptive geometryDescriptive set theoryDesign of experimentsDifference algebraDifference equationsDifferential algebraDifferential algebraic geometryDifferential Galois theoryDifferential topologyDiffiety theoryDiophantine approximationDiophantine geometryDiscrepancy theoryDiscrete differential geometryDiscrete exterior calculusDiscrete geometryDiscrete Morse theoryDiscrete tomographyDistance geometryDistribution theory (generalized functions)Domain theoryDonaldson theoryDynamical systemsEffective descriptive set theoryElementary number theoryElimination theoryElliptic geometryEngineering mathematicsEnumerative combinatoricsEnumerative geometryEquivariant noncommutative algebraic geometryErgodic Ramsey theoryErgodic theoryEuler calculusEvolutionary game theoryExperimental mathematicsExterior calculusExtraordinary cohomology theoryExtremal combinatoricsExtremal graph theoryExtreme value theoryField theoryFinite geometryFinite model theoryFinsler geometryFirst-order logicFormal language theoryFoundations of mathematicsFractional calculusFractional dynamicsFredholm theoryFunctional analysisFunctional calculusFunctional data analysisFunctional equationsFuzzy logicFuzzy measure theoryFuzzy set theoryGalois cohomologyGalois geometryGalois theoryGauge theoryGeneral topologyGeneralized trigonometryGeometric algebraGeometric analysisGeometric calculusGeometric combinatoricsGeometric evolution equationsGeometric function theoryGeometric graph theoryGeometric group theoryGeometric invariant theoryGeometric measure theoryGeometric probabilityGeometric topologyGeometry of numbersGeostatisticsGlobal analysisGlobal differential geometryGyrotrigonometryHamiltonian dynamicsHarmonic analysisHigher category theoryHigher-dimensional algebraHigher-order logicHodge theoryHodge–Arakelov theoryHomological algebraHomology theoryHomotopical algebraHomotopy theoryHomotopy type theoryHopf algebra theoryHyperbolic dynamicsHyperbolic geometryHyperbolic trigonometryHypercomplex analysisHyperfunction theoryIdempotent analysisIncidence geometryInfinitary combinatoricsInformation geometryInformation-based complexityInteger programmingIntegral equationsIntegral geometryIntegral transformsIntersection theoryInterval analysisIntuitionistic logicIntuitionistic mathematicsIntuitionistic type theoryInvariant theoryInventory theoryInverse problemsInversive geometryInversive ring geometryItô calculusIwasawa theoryIwasawa–Tate theoryJordan algebra theoryK-homologyK-theoryKähler geometryKK-theoryKlein geometryKummer theoryL-theoryLarge deviations theoryLarge sample theoryLattice theoryLie sphere geometryLie theoryLimit theoryLine geometryLocal algebraLocal class field theoryLow-dimensional dynamicsLow-dimensional topologyMalliavin calculusMarkov processesMathematical biologyMathematical chemistryMathematical crystallographyMathematical economicsMathematical epidemiologyMathematical geologyMathematical linguisticsMathematical modelingMathematical oncologyMathematical psychologyMathematical sociologyMathematical statisticsMatrix theoryMatroid theoryMeasure theoryMetamathematicsMetric geometryMicrolocal analysisModal logicModel theoryModular representation theoryModule theoryMorse theoryMultilinear algebraMultiple-criteria decision analysisMultiplicative number theoryMultivariate statisticsNetwork theoryNevanlinna theoryNielsen theoryNon-abelian class field theoryNon-Archimedean analysisNonassociative algebraNoncommutative algebraNoncommutative algebraic geometryNoncommutative geometryNoncommutative harmonic analysisNoncommutative topologyNonlinear analysisNonlinear programmingNonparametric statisticsNonstandard analysisNonstandard calculusNonstandard topologyNumerical algebraic geometryNumerical linear algebraOperad theoryOperator algebrasOperator K-theoryOperator theoryOptimal control theoryOptimal transportOrbifold theoryOrder theoryOrdered geometryOscillation theoryp-adic analysisp-adic dynamicsp-adic Hodge theoryParabolic geometryParaconsistent mathematicsParametric statisticsPartition theoryPercolation theoryPermutation group theoryPerturbation theoryPicard–Vessiot theoryPiecewise linear topologyPluripotential theoryPointless topologyPoisson geometryPolyhedral combinatoricsPossibility theoryPotential theoryPredicative mathematicsProbabilistic combinatoricsProbabilistic graph theoryProbabilistic number theoryProbabilistic numericsProjective differential geometryProjective geometryProof theoryPseudo-Riemannian geometryQuantum algebraQuantum calculusQuantum group theoryQuaternionic analysisQueueing theoryRamsey theoryRandom dynamical systemsRandom matrix theoryRational geometryReal algebraic geometryReal K-theoryRecreational mathematicsRegression analysisRenewal theoryRepresentation theoryRepresentation theory of algebrasRepresentation theory of groupsReverse mathematicsRibbon theoryRiemann surface theoryRiemannian geometryRing theoryRough path theoryRough set theoryRuin theoryScheduling theoryScheme theoryScientific computingSecondary calculusSemigroup theorySequential analysisSet-theoretic topologySeveral complex variablesSheaf theorySieve theorySingularity theorySmooth dynamicsSmooth infinitesimal analysisSocial choice theorySpecial functionsSpectral geometrySpectral graph theorySpectral theorySpherical geometrySpherical trigonometryStatistical distribution theoryStochastic analysisStochastic control theoryStochastic geometryStochastic optimizationStochastic processesStratified Morse theorySummability theorySurgery theorySurvey samplingSurvival analysisSymbolic dynamicsSymplectic geometrySynthetic differential geometrySynthetic geometrySystolic geometryTensor calculusTheory of computationTiling theoryTime series analysisTime-scale calculusTopological combinatoricsTopological data analysisTopological degree theoryTopological dynamicsTopological geometryTopological graph theoryTopological group theoryTopological K-theoryTopological transformation groupsTopos theoryToric geometryTranscendental number theoryTransformation geometryTwisted K-theoryType theoryUmbral calculusUncertainty quantificationUncertainty theoryUniversal algebraUniversal hyperbolic trigonometryUtility theoryValuation theoryVariety theoryWavelet analysisRare +60Abstract algebraActuarial scienceAlgebraic geometryAnalysisAnalytic geometryApplied mathematicsBiostatisticsBoolean algebraCategory theoryChaos theoryCombinatoricsComplex analysisCryptographyDifferential calculusDifferential geometryDiscrete mathematicsEconometricsStatistics shaped for economic data, a field in its own right.Euclidean geometryFinite mathematicsFourier analysisFractal geometryGame theoryGraph theoryGroup theoryInformation theoryIntegral calculusKnot theoryLambda calculusLinear programmingMathematical financeMathematical logicMathematical physicsMultivariable calculusNon-Euclidean geometryNumerical analysisOperations researchOptimizationPartial differential equationsPure mathematicsReal analysisSet theorySolid geometryVector calculusSchooler +30ArithmeticDifferential equationsLinear algebraNumber theoryProbabilityTopologyPlankton +10AlgebraCalculusGeometryStatisticsTrigonometry