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Timeline for Inverse cohomological isomorphisms

Current License: CC BY-SA 3.0

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Sep 5, 2014 at 4:25 comment added Allen Hatcher @Lennart Meier: Yes, thanks. Corrected now.
Sep 5, 2014 at 4:23 history edited Allen Hatcher CC BY-SA 3.0
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Sep 4, 2014 at 23:41 comment added Lennart Meier You mean $H_n(\tilde{N}) = 0$?
Sep 4, 2014 at 14:43 history answered Allen Hatcher CC BY-SA 3.0