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Mar 1, 2019 at 15:32 comment added Theo Johnson-Freyd I once saw a math sci net review of a different paper that included the line “... $\Omega^{Spin}_{4k-1}$, which the authors seem unaware is nonzero in general”.
Jan 31, 2017 at 14:30 comment added Danny Ruberman Thanks, that makes sense, although it's a puzzling oversight from that era. I'll have to think about whether the manifolds in my situation are indeed framed.
Jan 31, 2017 at 13:58 history answered Dylan Wilson CC BY-SA 3.0