Timeline for Homological restrictions on certain $4$-manifolds
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Mar 9, 2023 at 16:28 | answer | added | HJRW | timeline score: 1 | |
| Mar 6, 2023 at 14:25 | comment | added | Igor Belegradek | Since $X/G$ is open $4$-manifold, it is homotopy equivalent to a $3$-dimensional CW complex, see mathoverflow.net/questions/365401/…, so $H_3(X/G)$ is free abelian. So the question is only whether it has finite rank, which (if true) must use finite generation of $G$. | |
| Mar 6, 2023 at 9:47 | history | asked | piper1967 | CC BY-SA 4.0 |