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

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