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Results tagged with at.algebraic-topology
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user 38823
Homotopy theory, homological algebra, algebraic treatments of manifolds.
0
votes
3
answers
450
views
Cohomologies of double covers
Let $\pi:X \rightarrow Y$ be a double cover between compact manifolds $X$, $Y$ and $\theta$ be the deck transformation. Let $H^2(X, \mathbb Z)^\theta$ be a group of $\theta^*$-invariant elements in $H …
- 1,841
5
votes
1
answer
459
views
Threefolds with the same Betti numbers and the same Chern numbers
By a threefold, I mean a compact complex manifold of dimension three.
My question is a simple one:
Are there known INFINITELY many non-homeomorphic threefolds that have the same Betti numbers and the …
- 1,841