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Diff — Differentiable manifold

Revision #1151 → #2440 · back to history

modifiedExotic 7-spheres (Milnor)b2396e62a856
FieldFrom #1151To #2440
noteThe existence of an exotic 7-sphere is stated as a `proof_wanted` in `Mathlib.Geometry.Manifold.PoincareConjecture`; the proof is not formalized.The existence of an exotic 7-sphere is stated as a `proof_wanted` in `Mathlib.Geometry.Manifold.PoincareConjecture`; the proof is not formalized. (Mathlib declares this as `proof_wanted` — stated, not yet proven.)
provenanceaiai-moderated
statuspartialnot_formalized