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Mathematical Sciences Classification System

55Nxx - Homology and cohomology theories
[See also 57Txx]

• 1
  55N05
  \v Cech types
• 55N07
  Steenrod-Sitnikov homologies
• 1
  55N10
  Singular theory
• 3
  55N15
  $K$-theory [See also 19Lxx] {For algebraic $K$-theory, see 18F25, 19-XX}
• 2
  55N20
  Generalized (extraordinary) homology and cohomology theories
• 4
  55N22
  Bordism and cobordism theories, formal group laws [See also 14L05, 19L41, 57R75, 57R77, 57R85, 57R90]
• 3
  55N25
  Homology with local coefficients, equivariant cohomology
• 1
  55N30
  Sheaf cohomology [See also 18F20, 32C35, 32L10]
• 55N32
  Orbifold cohomology
• 2
  55N33
  Intersection homology and cohomology
• 55N34
  Elliptic cohomology
• 4
  55N35
  Other homology theories
• 55N40
  Axioms for homology theory and uniqueness theorems
• 55N45
  Products and intersections
• 4
  55N91
  Equivariant homology and cohomology [See also 19L47]
• 1
  55N99
  None of the above, but in this section