Even intersection form implies spin structure: Difference between revisions
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{{result related to intersection form}} | {{result related to intersection form}} | ||
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==Statement== | ==Statement== | ||
A compact simply connected 4-dimensional oriented Riemannian manifold admits a [[spin structure]] if and only if its [[intersection form]] is [[even intersection form|even]]. | A compact simply connected 4-dimensional oriented Riemannian manifold admits a [[spin structure]] if and only if its [[intersection form]] is [[even intersection form|even]]. | ||
Revision as of 10:36, 6 July 2007
Template:Result related to intersection form
Template:Spinnability condition
Statement
A compact simply connected 4-dimensional oriented Riemannian manifold admits a spin structure if and only if its intersection form is even.