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Statements
1991
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signature of a 4-dimensional, closed, orientable, smooth manifold
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self- intersection index of an orientable surface
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homology class dual to the Stiefel Whitney class
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Arf invariant
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closed (8k \(+\) 2)-dimensional manifold
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Pin-structure
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Pin-cobordisms
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orientable manifold of dimension 8k \(+\) 4
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submanifold of codimension 2
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