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Feb 22, 2023 at 19:01 history edited Dave Benson CC BY-SA 4.0
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Feb 22, 2023 at 14:45 vote accept user302934
Feb 22, 2023 at 13:25 comment added Igor Belegradek Just to clarify: given an orientation of $RP^3$ there two spin structures corresponding to that orientation of $RP^3$. The diffeomorphism in Dabrowski-Trautman does not interchange these spin structures. Rather, it defines a bijection between the sets of spin structures associated with two orientations of $RP^3$. Isn't this true for any orientation-reversing diffeomorphism of any manifold?
Feb 22, 2023 at 10:12 history undeleted Dave Benson
Feb 22, 2023 at 10:12 history edited Dave Benson CC BY-SA 4.0
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Feb 22, 2023 at 9:51 history deleted Dave Benson via Vote
Feb 22, 2023 at 9:50 history answered Dave Benson CC BY-SA 4.0