Corpus formal_theorem canonical 2026-05-27T20:53:50+00:00
Corpus v3 · Formal theorem cid005765FTH0502canonicalv1

topo_obstruction_4 (theorem)

/-- [III.D92] Topology has 4 obstruction classes. -/

Formalization

lean_axiom_freesorries: 0project axioms: 0
  • ModuleTauLib.BookIII.Bridge.TranslationObstruction
  • Declarationtopo_obstruction_4
  • Lean toolchainleanprover/lean4:v4.x.x

Identifiers

  • Corpus ID cid005765
  • Primary alias FTH0502
  • Type Formal theorem
  • Status canonical
  • Visibility public
  • Version v1

Aliases & legacy IDs

topo_obstruction_4topo-obstruction-4TauLib.BookIII.Bridge.TranslationObstruction::topo_obstruction_4

Release lines

corpus_v2corpus_v3_working

Version & History

  • v1 · 2026-05-10 imported from v2 taulib declarations

Status disclaimer

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