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edit approved Feb 26, 2016 at 19:08

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gt.geometric-topology smooth-manifolds vector-bundles characteristic-classes

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asked Feb 26, 2016 at 18:40

user74565

Tangent bundle of smooth closed simply-connected $4$-manifold $w_1 = w_2 = 0$ can be trivialized in complement of point?

Let $M$ be a smooth closed simply-connected $4$-manifold with $w_1 = w_2 = 0$. Can $TM$ be trivialized in the complement of a point?

gt.geometric-topology characteristic-classes