Formal & Physical Sciences MathematicsENSchemes 8: LocalizationRichard E BorcherdsJuly 6, 2020 23 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySchemesLocalization
Formal & Physical Sciences MathematicsENSchemes 7: More examples of Spec RRichard E BorcherdsJuly 6, 2020 19 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySchemesSpectrum
Formal & Physical Sciences MathematicsENSchemes 6: The spectrums of C[x,y], Z[x]Richard E BorcherdsJuly 5, 2020 21 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySchemesSpectrum of a Ring
Formal & Physical Sciences MathematicsENSchemes 5: Definition of a schemeRichard E BorcherdsJuly 5, 2020 30 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySchemesSpectrum
Formal & Physical Sciences MathematicsENSchemes 4: f * and f^ 1Richard E BorcherdsJuly 5, 2020 22 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySheavesSchemes
Formal & Physical Sciences MathematicsENSchemes 3: exactness and sheavesRichard E BorcherdsJuly 4, 2020 24 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySheavesExact Sequences
Formal & Physical Sciences MathematicsENSchemes 2: Etale spacesRichard E BorcherdsJuly 4, 2020 25 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySheavesEtale Space
Formal & Physical Sciences MathematicsENSchemes 1: IntroductionRichard E BorcherdsJuly 4, 2020 28 min★ ★ ★ ★ ★ 5/5Algebraic GeometrySchemesSheaves
Formal & Physical Sciences MathematicsENGroup theory 32: Subgroups of free groupsRichard E BorcherdsJuly 3, 2020 21 min★ ★ ★ ★ ★ 5/5Group TheoryFree GroupsSubgroups
Formal & Physical Sciences MathematicsENGroup theory 31: Free groupsRichard E BorcherdsJuly 3, 2020 27 min★ ★ ★ ★ ★ 5/5Free GroupsGroup TheoryFree Abelian Groups
Formal & Physical Sciences MathematicsENUndergraduate math talk: Fermat's last theorem for exponent n=4Richard E BorcherdsJuly 2, 2020 11 min★ ★ ★ ★ ★ 5/5Fermat's Last TheoremNumber TheoryMethod of Descent
Formal & Physical Sciences MathematicsENGroup theory 30: Outer automorphismsRichard E BorcherdsJuly 2, 2020 24 min★ ★ ★ ★ ★ 5/5Group TheoryAutomorphismsSymmetric Groups
Formal & Physical Sciences MathematicsENGroup theory 29:The Jordan Holder theoremRichard E BorcherdsJuly 2, 2020 18 min★ ★ ★ ★ ★ 5/5Group TheoryJordan-Hölder TheoremComposition Series
Formal & Physical Sciences MathematicsENGroup theory 28: Groups of order 120, 168Richard E BorcherdsJuly 2, 2020 13 min★ ★ ★ ★ ★ 5/5Group TheoryBinary Icosahedral GroupFano Plane
Formal & Physical Sciences MathematicsENGroup theory 27: The icosahedral groupRichard E BorcherdsJuly 2, 2020 26 min★ ★ ★ ★ ★ 5/5Group TheoryIcosahedral GroupSimple Groups
Formal & Physical Sciences MathematicsENGroup theory 26: Too many p groupsRichard E BorcherdsJuly 2, 2020 12 min★ ★ ★ ★ ☆ 4/5Group TheoryP-GroupsClassification
Formal & Physical Sciences MathematicsENUndergraduate math talk: The abc conjectureRichard E BorcherdsJuly 1, 2020 21 min★ ★ ★ ★ ★ 5/5Abc ConjectureNumber TheoryPolynomials
Formal & Physical Sciences MathematicsENGroup theory 25: The transfer homomorphismRichard E BorcherdsJuly 1, 2020 25 min★ ★ ★ ★ ★ 5/5Group TheoryTransfer HomomorphismAbelianization
Formal & Physical Sciences MathematicsENGroup theory 24: Extra special groupsRichard E BorcherdsJuly 1, 2020 31 min★ ★ ★ ★ ★ 5/5Group TheoryExtra Special GroupsHeisenberg Group
Formal & Physical Sciences MathematicsENGroup theory 23: Coxeter Todd algorithmRichard E BorcherdsJuly 1, 2020 25 min★ ★ ★ ★ ★ 5/5Group TheoryCoxeter-Todd AlgorithmCoset Enumeration
Formal & Physical Sciences MathematicsENGroup theory 22: Symmetric groupsRichard E BorcherdsJune 30, 2020 29 min★ ★ ★ ★ ☆ 4/5Group TheorySymmetric GroupAlternating Group
Formal & Physical Sciences MathematicsENGroup theory 21: Groups of order 24Richard E BorcherdsJune 30, 2020 20 min★ ★ ★ ★ ☆ 4/5Group TheoryClassificationBinary Tetrahedral Group
Formal & Physical Sciences MathematicsENGroup theory 20: Frobenius groupsRichard E BorcherdsJune 29, 2020 12 min★ ★ ★ ★ ★ 5/5Group TheoryFrobenius GroupsFinite Groups
Formal & Physical Sciences MathematicsENGroup theory 19: Wreath productsRichard E BorcherdsJune 29, 2020 20 min★ ★ ★ ★ ★ 5/5Group TheoryWreath ProductSylow Subgroups
Formal & Physical Sciences MathematicsENGroup theory 18: Nilpotent groupsRichard E BorcherdsJune 29, 2020 16 min★ ★ ★ ★ ★ 5/5Group TheoryNilpotent GroupsP-Groups
Formal & Physical Sciences MathematicsENGroup theory 17: Finite abelian groupsRichard E BorcherdsJune 29, 2020 25 min★ ★ ★ ★ ★ 5/5Group TheoryAbelian GroupsFinitely Generated
Formal & Physical Sciences MathematicsENGroup theory 16: Automorphisms of cyclic groupsRichard E BorcherdsJune 29, 2020 30 min★ ★ ★ ★ ★ 5/5Group TheoryAutomorphismsCyclic Groups
Formal & Physical Sciences MathematicsENGroup theory 15: Groups of order 12Richard E BorcherdsJune 27, 2020 19 min★ ★ ★ ★ ★ 5/5Group TheorySylow TheoremsClassification
Formal & Physical Sciences MathematicsENGroup theory 14: Sylow theoremsRichard E BorcherdsJune 27, 2020 19 min★ ★ ★ ★ ★ 5/5Sylow TheoremsGroup TheoryFinite Groups
Formal & Physical Sciences MathematicsENGroup theory 13: Dihedral groupsRichard E BorcherdsJune 27, 2020 21 min★ ★ ★ ★ ★ 5/5Group TheoryDihedral GroupsSymmetry
Formal & Physical Sciences MathematicsENGroup theory 12: Cauchy's theoremRichard E BorcherdsJune 27, 2020 22 min★ ★ ★ ★ ★ 5/5Group TheoryCauchy's TheoremFinite Groups
Formal & Physical Sciences MathematicsENGroup theory 11: Groups of prime power orderRichard E BorcherdsJune 27, 2020 15 min★ ★ ★ ★ ★ 5/5Group TheoryP-GroupsCenter
Formal & Physical Sciences MathematicsENGroup theory 9: QuaternionsRichard E BorcherdsJune 26, 2020 20 min★ ★ ★ ★ ★ 5/5QuaternionsGroup TheoryRotations
Formal & Physical Sciences MathematicsENGroup theory 10: Burnside's lemmaRichard E BorcherdsJune 26, 2020 19 min★ ★ ★ ★ ★ 5/5Burnside's LemmaGroup TheoryOrbits
Formal & Physical Sciences MathematicsENGroup theory 8: ExtensionsRichard E BorcherdsJune 25, 2020 14 min★ ★ ★ ★ ★ 5/5Group TheoryExtensionsClassification
Formal & Physical Sciences MathematicsENGroup theory 7: Semidirect productsRichard E BorcherdsJune 25, 2020 21 min★ ★ ★ ★ ★ 5/5Group TheorySemidirect ProductClassification
Formal & Physical Sciences MathematicsENGroup theory 6: normal subgroups and quotient groupsRichard E BorcherdsJune 25, 2020 24 min★ ★ ★ ★ ★ 5/5Group TheoryNormal SubgroupsQuotient Groups
Formal & Physical Sciences MathematicsENGroup theory 5: productsRichard E BorcherdsJune 24, 2020 29 min★ ★ ★ ★ ★ 5/5Group TheoryProductsExact Sequences
Formal & Physical Sciences MathematicsENGroup theory 4: Lagrange's theoremRichard E BorcherdsJune 24, 2020 28 min★ ★ ★ ★ ★ 5/5Group TheoryLagrange's TheoremCosets
Formal & Physical Sciences MathematicsENGroup theory 3: HomomorphismsRichard E BorcherdsJune 23, 2020 18 min★ ★ ★ ★ ★ 5/5Group TheoryHomomorphismIsomorphism