Revision #1149 → #2439 · back to history
c9b3987c483d| Field | From #1149 | To #2439 |
|---|---|---|
| note | The existence of an exotic 7-sphere is stated as a `proof_wanted` in Mathlib: a manifold homeomorphic to S^7 but with no diffeomorphism to S^7. The proof is not yet provided. | The existence of an exotic 7-sphere is stated as a `proof_wanted` in Mathlib: a manifold homeomorphic to S^7 but with no diffeomorphism to S^7. The proof is not yet provided. (Mathlib declares this as `proof_wanted` — stated, not yet proven.) |
| provenance | ai | ai-moderated |
| status | partial | not_formalized |
4729e82d6965| Field | From #1149 | To #2439 |
|---|---|---|
| note | Mathlib states the existence of a small exotic R^4 as a `proof_wanted`, but not the uncountability of exotic smooth structures. The full result is far from formalized. | Mathlib states the existence of a small exotic R^4 as a `proof_wanted`, but not the uncountability of exotic smooth structures. The full result is far from formalized. (Mathlib declares this as `proof_wanted` — stated, not yet proven.) |
| provenance | ai | ai-moderated |
| status | partial | not_formalized |