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Poincaré duality — latest news, discussion & facts — IJR

Poincaré duality

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Poincaré duality

duality that relates homology and cohomology groups for oriented closed manifolds

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About Poincaré duality

In mathematics, the Poincaré duality theorem, named after Henri Poincaré, is a basic result on the structure of the homology and cohomology groups of manifolds. It states that if M is an n-dimensional oriented closed manifold (compact and without boundary), then the kth cohomology group of M is isomorphic to the (n − k)th homology group of M, for all integers k

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