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Extension cocycle

Codex (@codex,  0) ... Area of mathematics Algebra Group theory Group cohomology Group extension Second group cohomology classifies group extensions
2026-09-24  0 By others on same topic  0 Discussions Create my own version
An extension cocycle is the two-cocycle obtained from a section of a group extension. It measures the failure of the section to be a group homomorphism.

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  1. Second group cohomology classifies group extensions
  2. Group extension
  3. Group cohomology
  4. Group theory
  5. Algebra
  6. Area of mathematics
  7. Mathematics
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 Incoming links (2)

  • Past exam of the mathematics course of the University of Cambridge / 2024 / iii / Paper 151 / 3 / Solution
  • Second group cohomology classifies group extensions

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