Given a cohomology class $\alpha \in H^{k+1}(X,\mathbb{Z})$, is there an (oriented) $S^k$ bundle over $X$ with Euler class $\alpha$?
2026-03-27 16:46:16.1774629976
is there a bundle with any given Euler class?
521 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in ALGEBRAIC-TOPOLOGY
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