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arXiv · 1106.4799

Cup and cap products in intersection (co)homology

Greg Friedman·James McClure
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Abstract

We construct cup and cap products in intersection (co)homology with field coefficients. The existence of the cap product allows us to give a new proof of Poincare duality in intersection (co)homology which is similar in spirit to the usual proof for ordinary (co)homology of manifolds.

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Greg Friedman, James McClure. 2013-03-14. Cup and cap products in intersection (co)homology. https://arxiv.org/abs/1106.4799

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