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Nov 5, 2022 at 8:19 vote accept Devendra Singh Rana
Nov 4, 2022 at 19:05 answer added John Rognes timeline score: 5
Nov 4, 2022 at 17:45 comment added Devendra Singh Rana @NajibIdrissi If that's the case we need to see if the same is true for 3-dim projective space? What maps can we consider on and from sphere through the projective space
Nov 4, 2022 at 12:31 comment added Najib Idrissi I've never heard that term, but given the context, could it just mean "the $n$-manifold $M$ is S-reducible if the identity of $S^n$ factors through $M$ up to homotopy"?
Nov 4, 2022 at 12:02 history edited YCor CC BY-SA 4.0
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Nov 4, 2022 at 11:46 history asked Devendra Singh Rana CC BY-SA 4.0