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Source labels openChecked July 26, 2026

Hilbert ProblemsTopological groups

Hilbert's Fifth Problem and the Hilbert–Smith Conjecture

Hilbert–Smith conjecture*: every locally compact topological group acting continuously and faithfully on a connected finite-dimensional topological manifold is a Lie group.

Mathematical statement

Hilbert–Smith conjecture*: every locally compact topological group acting continuously and faithfully on a connected finite-dimensional topological manifold is a Lie group.

Statement source: Hilbert Problems statement material

Statement terms: Source-specific

Source-specific terms. Therefore does not assert reuse rights beyond attributed display.

Statement artifacts, not proofs

These records expose exact Lean propositions and statement-only wrappers. Defining a proposition does not supply a proof of it. A placeholder-bearing target also contains no proof. Elaboration checks syntax and types; it does not certify that a formalization perfectly captures every nuance of the informal problem.

Pinned Lean formulation 1

hilbert_smith_conjecture

Canonical source
Complete statement target, proof intentionally absentLean 4
theorem hilbert_smith_conjecture    [IsTopologicalGroup G] [LocallyCompactSpace G]    [MulAction G X] [ContinuousSMul G X] [FaithfulSMul G X] :    AdmitsLieGroupStructure G := by  sorry
Statement source
Formal Conjectures
Lean version
v4.27.0
Placeholder
Present; no proof artifact
Source evidence
Pinned source index
Fidelity review
Community formulation

References