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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeNov 6th 2012

    expanded at 2-framing

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeNov 6th 2012

    added a bit more, thanks to pointers from Hisham Sati. Also added cross-link with string structure.

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeNov 12th 2012

    expanded the Definition-section at 2-framing, made explicit why the Spin-lift exists that enters the definition and made explicit the smooth moduli stack of 2-framings.

    I am discussing related matters with Domenico behind the scenes. There is now a tentative section Relation to spin^c-structures, too, but I am not sure yet what exactly the statement to be made there should be.