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S May 19, 2022 at 3:28 history suggested The Amplitwist CC BY-SA 4.0
fixed broken link to springerlink.com
May 19, 2022 at 0:39 review Suggested edits
S May 19, 2022 at 3:28
Jan 31, 2010 at 21:19 comment added john mangual I'm sorry for causing so much confusion. These references look helpful, as does "Spin Geometry" by Lawson and Michelson.
Jan 30, 2010 at 23:28 comment added Ryan Budney Ah, yes, typo. I meant to say $Spin(3)$.
Jan 30, 2010 at 22:10 comment added José Figueroa-O'Farrill Thanks for this last reference. I knew there was a paper on l'Enseignement, but I had forgotten the author and title! It's in my office, but I'm at home now. As to your first comment, $\mathrm{SU}(2)$ is not isomorphic to $\mathrm{Spin}(2)$, but to $\mathrm{Spin}(3)$.
Jan 30, 2010 at 21:52 comment added Ryan Budney Another standard spin structure reference would be Milnor's l'Enseignement paper.
Jan 30, 2010 at 21:35 comment added Ryan Budney One common way to represent spin structures on $2$-dimensional vector bundles is to consider the $SO(2)$ as the subgroup of $SO(3)$ that fixes an axis, so the double cover of $SO(2)$ is naturally a subgroup of $Spin(2) \equiv SU(2)$. So I suspect John is using a formulation of spin structures that factors through this construction.
Jan 30, 2010 at 21:26 history answered José Figueroa-O'Farrill CC BY-SA 2.5