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Results tagged with at.algebraic-topology
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user 424
Homotopy theory, homological algebra, algebraic treatments of manifolds.
11
votes
2
answers
927
views
Embeddings without nonvanishing normal vector fields
For which values of $n$ does there exist an embedding of a smooth compact manifold $M\hookrightarrow R^n$ into $n$-dimensional Euclidean space such that the normal bundle to $M$ has no nonvanishing s …
- 2,927
2
votes
Accepted
Homotopy groups of the blow-ups and monotone symplectic manifolds
Write $X$ for the manifold in question (i.e. the symplectic blowup of the unit disc bundle in the cotangent bundle of a surface $\Sigma$).
If you're interested just in monotonicity, what's relevant is …
- 2,927