The List of algebraic topology topics reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

List of algebraic topology topics

This is a list of algebraic topology topics, by Wikipedia page.

Table of contents

1 Homology (mathematics) 2 Homotopy theory 3 Further developments 4 Homological algebra 5 History

Homology (mathematics)

Main article:Homology theory

• Simplex
• Simplicial complex
  • Polytope
  • Triangulation
  • Barycentric subdivision
  • Simplicial approximation theorem
• Chain (mathematics)
• Betti number
• Euler characteristic
  • Genus
  • Riemann-Hurwitz formula
• Singular homology
• Mayer-Vietoris sequence
• Cohomology
• Poincaré duality
• Applications
  • Jordan curve theorem
  • Brouwer fixed point theorem
  • Invariance of domain
  • Lefschetz fixed-point theorem
  • Hairy ball theorem
  • Degree (mathematics)
  • Borsuk-Ulam Theorem

Homotopy theory

• Homotopy
• Fundamental group
• Seifert-van Kampen theorem
• Winding number
• Simply connected
  • Universal cover
• Monodromy
• Homotopy lifting property
• Fibre bundle
  • Möbius strip
  • Line bundle
  • Vector bundle
  • Associated bundle
  • Fibration
  • Hopf bundle
• Plus construction

Further developments

• Künneth theorem
• De Rham cohomology
• Characteristic class
  • Chern class
  • Chern-Simons form
  • Pontryagin class
• Poincaré conjecture
• K-theory
• Cobordism
• Hodge conjecture
• Weil conjectures

Homological algebra

• Chain complex
• Commutative diagram
• Exact sequence
  • Five lemma
  • Short five lemma
  • Snake lemma
  • Splitting lemma
  • Extension problem
• Abelian category
• Group cohomology
• Sheaf
  • Grothendieck topology

History

• Combinatorial topology

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