Formal & Physical Sciences MathematicsENRings 16 Factorization of polynomialsRichard E BorcherdsOctober 21, 2021 25 min★ ★ ★ ★ ★ 5/5Polynomial FactorizationIrreducibilityEisenstein's Criterion
Formal & Physical Sciences MathematicsENRIngs 15 PolynomialsRichard E BorcherdsOctober 20, 2021 29 min★ ★ ★ ★ ★ 5/5PolynomialsUnique FactorizationRings
Formal & Physical Sciences MathematicsENRIngs 14 Limits and exactnessRichard E BorcherdsOctober 16, 2021 22 min★ ★ ★ ★ ★ 5/5RingsModulesLimits
Formal & Physical Sciences MathematicsENRings 13 Colimits and exactnessRichard E BorcherdsOctober 15, 2021 33 min★ ★ ★ ★ ★ 5/5Category TheoryColimitsExact Sequences
Formal & Physical Sciences MathematicsENRings 12 Duality and injective modulesRichard E BorcherdsOctober 13, 2021 50 min★ ★ ★ ★ ★ 5/5DualityInjective ModulesProjective Modules
Formal & Physical Sciences MathematicsENCategories 6 Monoidal categoriesRichard E BorcherdsOctober 10, 2021 23 min★ ★ ★ ★ ★ 5/5Monoidal CategoriesCategory TheorySymmetric Monoidal Categories
Formal & Physical Sciences MathematicsENRings 11 Tensor products of modulesRichard E BorcherdsOctober 9, 2021 26 min★ ★ ★ ★ ★ 5/5Tensor ProductModulesRings
Formal & Physical Sciences MathematicsENRings 9 Projective modulesRichard E BorcherdsOctober 7, 2021 34 min★ ★ ★ ★ ★ 5/5Projective ModulesHomological AlgebraVector Bundles
Formal & Physical Sciences MathematicsENRings 8 Free modulesRichard E BorcherdsOctober 6, 2021 21 min★ ★ ★ ★ ★ 5/5Free ModulesRing TheoryRank
Formal & Physical Sciences MathematicsENRIngs 7: LocalizationRichard E BorcherdsOctober 3, 2021 23 min★ ★ ★ ★ ★ 5/5LocalizationRing TheoryCommutative Algebra
Formal & Physical Sciences MathematicsENRings 6 Prime and maximal idealsRichard E BorcherdsOctober 2, 2021 29 min★ ★ ★ ★ ★ 5/5Prime IdealsMaximal IdealsSpectrum of a Ring
Formal & Physical Sciences MathematicsENRings and modules 5 Examples of unique factorizationsRichard E BorcherdsOctober 1, 2021 22 min★ ★ ★ ★ ★ 5/5Unique FactorizationGaussian IntegersQuadratic Fields
Formal & Physical Sciences MathematicsENRings and modules 4 Unique factorizationRichard E BorcherdsSeptember 30, 2021 38 min★ ★ ★ ★ ★ 5/5Unique FactorizationIntegral DomainsEuclidean Domains
Formal & Physical Sciences MathematicsENRings and midules 3: Burnside ring and rings of differential operatorsRichard E BorcherdsSeptember 29, 2021 18 min★ ★ ★ ★ ★ 5/5Burnside RingDifferential OperatorsRing Theory
Formal & Physical Sciences MathematicsENRings and modules 2: Group ringsRichard E BorcherdsSeptember 28, 2021 23 min★ ★ ★ ★ ★ 5/5Group RingsMonoid RingsIdempotents
Formal & Physical Sciences MathematicsENRings and modules 1 IntroductionRichard E BorcherdsSeptember 27, 2021 30 min★ ★ ★ ★ ★ 5/5Ring TheoryModulesAbstract Algebra
Formal & Physical Sciences MathematicsENCategories 5 Limits and colimitsRichard E BorcherdsSeptember 24, 2021 31 min★ ★ ★ ★ ★ 5/5Category TheoryLimitsColimits
Formal & Physical Sciences MathematicsENCategories 2: FunctorsRichard E BorcherdsSeptember 21, 2021 20 min★ ★ ★ ★ ★ 5/5Category TheoryFunctorsMathematics
Formal & Physical Sciences MathematicsENCategories 1 IntroductionRichard E BorcherdsSeptember 20, 2021 24 min★ ★ ★ ★ ★ 5/5Category TheoryMathematicsAlgebra
Formal & Physical Sciences MathematicsENLie groups: Poincare-Birkhoff-Witt theoremRichard E BorcherdsFebruary 19, 2021 30 min★ ★ ★ ★ ★ 5/5Lie GroupsPoincaré-Birkhoff-Witt TheoremUniversal Enveloping Algebra
Formal & Physical Sciences MathematicsENDedekind domains: IntroductionRichard E BorcherdsFebruary 5, 2021 24 min★ ★ ★ ★ ★ 5/5Dedekind DomainsCommutative AlgebraAlgebraic Number Theory
Formal & Physical Sciences MathematicsENGalois theory: Transcendental extensionsRichard E BorcherdsJanuary 19, 2021 34 min★ ★ ★ ★ ★ 5/5Galois TheoryTranscendental ExtensionsTranscendence Basis
Formal & Physical Sciences MathematicsENGalois theory: Infinite Galois extensionsRichard E BorcherdsJanuary 18, 2021 36 min★ ★ ★ ★ ★ 5/5Galois TheoryInfinite ExtensionsProfinite Groups
Formal & Physical Sciences MathematicsENGalois theory: Hilbert's theorem 90Richard E BorcherdsJanuary 17, 2021 35 min★ ★ ★ ★ ★ 5/5Galois TheoryHilbert's Theorem 90Group Cohomology
Formal & Physical Sciences MathematicsENGalois theory: DiscriminantsRichard E BorcherdsJanuary 16, 2021 17 min★ ★ ★ ★ ★ 5/5Galois TheoryDiscriminantField Extension
Formal & Physical Sciences MathematicsENGalois theory: Norm and traceRichard E BorcherdsJanuary 15, 2021 24 min★ ★ ★ ★ ★ 5/5Galois TheoryField ExtensionNorm
Formal & Physical Sciences MathematicsENGalois theory: Wedderburn's theoremRichard E BorcherdsJanuary 14, 2021 14 min★ ★ ★ ★ ★ 5/5Wedderburn's TheoremDivision AlgebraFinite Field
Formal & Physical Sciences MathematicsENGalois theory: Cyclotomic polynomialsRichard E BorcherdsJanuary 13, 2021 22 min★ ★ ★ ★ ★ 5/5Galois TheoryCyclotomic PolynomialsIrreducibility
Formal & Physical Sciences MathematicsENGalois theory: Frobenius automorphismRichard E BorcherdsJanuary 12, 2021 21 min★ ★ ★ ★ ★ 5/5Galois TheoryFrobenius AutomorphismFinite Fields
Formal & Physical Sciences MathematicsENGalois theory: Cubics and quarticsRichard E BorcherdsJanuary 11, 2021 17 min★ ★ ★ ★ ★ 5/5Galois TheoryCubic EquationsQuartic Equations
Formal & Physical Sciences MathematicsENGalois theory: Artin Schreier extensionsRichard E BorcherdsJanuary 10, 2021 19 min★ ★ ★ ★ ★ 5/5Galois TheoryArtin-SchreierField Extensions
Formal & Physical Sciences MathematicsENGalois theory: Kummer extensionsRichard E BorcherdsJanuary 9, 2021 22 min★ ★ ★ ★ ★ 5/5Galois TheoryKummer ExtensionsCyclic Extensions
Formal & Physical Sciences MathematicsENGalois theory: Abel's theoremRichard E BorcherdsJanuary 8, 2021 27 min★ ★ ★ ★ ★ 5/5Galois TheoryAbel's TheoremQuintic
Formal & Physical Sciences MathematicsENGalois theory: Primitive elementsRichard E BorcherdsJanuary 7, 2021 15 min★ ★ ★ ★ ★ 5/5Galois TheoryPrimitive ElementField Extension
Formal & Physical Sciences MathematicsENGalois theory: Fundamental theorem of algebraRichard E BorcherdsJanuary 6, 2021 12 min★ ★ ★ ★ ★ 5/5Galois TheoryFundamental Theorem of AlgebraAlgebraically Closed Field
Formal & Physical Sciences MathematicsENGalois theory: HeptadecagonRichard E BorcherdsJanuary 5, 2021 23 min★ ★ ★ ★ ★ 5/5Galois TheoryConstructible PolygonsHeptadecagon
Formal & Physical Sciences MathematicsENGalois theory: Main theoremRichard E BorcherdsJanuary 4, 2021 18 min★ ★ ★ ★ ★ 5/5Galois TheoryField TheoryGroup Theory
Formal & Physical Sciences MathematicsENGalois theory: Examples of Galois extensionsRichard E BorcherdsJanuary 3, 2021 20 min★ ★ ★ ★ ★ 5/5Galois TheoryField ExtensionsGalois Group
Formal & Physical Sciences MathematicsENGalois theory: Galois extensionsRichard E BorcherdsJanuary 2, 2021 27 min★ ★ ★ ★ ★ 5/5Galois TheoryField ExtensionsAlgebra
Formal & Physical Sciences MathematicsENGalois theory: Separable extensionsRichard E BorcherdsJanuary 1, 2021 13 min★ ★ ★ ★ ★ 5/5Galois TheorySeparable ExtensionsField Theory