Timeline for 4-dimensional cohomology $\mathbb{CP}^2$'s
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 24, 2020 at 23:21 | comment | added | Michael Albanese | Fake projective planes are irreducible. More generally, aspherical manifolds of dimension at least three are always irreducible. | |
| Sep 23, 2020 at 3:25 | comment | added | Ian Agol | Kai, the fake projective planes only have the rational cohomology of $CP^2$, they have torsion in $H_1$. See Theorem 9.1 arxiv.org/abs/math/0512115v2 | |
| Sep 23, 2020 at 2:02 | comment | added | Anubhav Mukherjee | Can you please tell me the description of such algebraic surfaces which are fake projective spaces? Or any references? | |
| Sep 22, 2020 at 23:44 | history | answered | Kai Nakamura | CC BY-SA 4.0 |