As the title says, can $\mathbb{CP}^2$ be realized as the boundary of a compact smooth $5$-manifold?
2026-03-29 19:15:54.1774811754
$\mathbb{CP}^2$ realizable as boundary of compact smooth $5$-manifold?
74 Views Asked by user205049 https://math.techqa.club/user/user205049/detail AtRelated Questions in ALGEBRAIC-TOPOLOGY
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