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Results tagged with at.algebraic-topology
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user 70864
Homotopy theory, homological algebra, algebraic treatments of manifolds.
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Poincaré Duality for non-compact manifolds without Zorn's Lemma
Does exists a proof of the Poincaré Duality version for non-compact manifolds without using the Zorn's Lemma? I know that there is a proof using the Whitney embedding theorem, but I don't know this th …
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