• 1 Foundational Locale Theory ▶
    • 1.1 Frames and Basic Structure
    • 1.2 Frame Presentations
  • 2 The Zariski Locale from Commutative Rings ▶
    • 2.1 Radical Ideals as a Frame
    • 2.2 Frame Distributivity for Radical Ideals
    • 2.3 Basic Open Sets
    • 2.4 Frame Presentation of the Zariski Locale
  • 3 Functoriality and Ring Homomorphisms ▶
    • 3.1 Functorial Behavior of Spec
    • 3.2 Functorial Properties
  • 4 The Structure Sheaf ▶
    • 4.1 Sheaves on Locales
    • 4.2 The Structure Sheaf on Zariski Locales
  • 5 Schemes as Locally Ringed Locales ▶
    • 5.1 Locally Ringed Locales
    • 5.2 Affine Schemes
    • 5.3 Morphisms of Schemes
    • 5.4 Gluing and General Schemes
  • 6 Basic Properties of Schemes ▶
    • 6.1 Open and Closed Sublocales
    • 6.2 Irreducibility and Primeness
    • 6.3 Irreducible Schemes
  • Dependency graph

Pointless Schemes

Aarhus AI4Math Workshop 2026

  • 1 Foundational Locale Theory
    • 1.1 Frames and Basic Structure
    • 1.2 Frame Presentations
  • 2 The Zariski Locale from Commutative Rings
    • 2.1 Radical Ideals as a Frame
    • 2.2 Frame Distributivity for Radical Ideals
    • 2.3 Basic Open Sets
    • 2.4 Frame Presentation of the Zariski Locale
  • 3 Functoriality and Ring Homomorphisms
    • 3.1 Functorial Behavior of Spec
    • 3.2 Functorial Properties
  • 4 The Structure Sheaf
    • 4.1 Sheaves on Locales
    • 4.2 The Structure Sheaf on Zariski Locales
  • 5 Schemes as Locally Ringed Locales
    • 5.1 Locally Ringed Locales
    • 5.2 Affine Schemes
    • 5.3 Morphisms of Schemes
    • 5.4 Gluing and General Schemes
  • 6 Basic Properties of Schemes
    • 6.1 Open and Closed Sublocales
    • 6.2 Irreducibility and Primeness
    • 6.3 Irreducible Schemes