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Results tagged with at.algebraic-topology
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user 26086
Homotopy theory, homological algebra, algebraic treatments of manifolds.
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answer
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Reverse map of a homology equivalence.
Dear community,
assume that $f\colon X\to Y$ is a homology equivalence, i.e. induces isomorphisms on all integer homology groups. Is there a map $g\colon Y\to X$ which is also a homology equivalence? …
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