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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeSep 22nd 2011
    • (edited Jul 17th 2013)

    I have split off spin^c from spin^c structure

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeJul 17th 2013
    • (edited Jul 17th 2013)

    in the section As the homotopy fiber of smooth W3 I have added some more comments and a proposition to make more explicit why the “determinant line” map is given on the canonical U(1)U(1)-components by multiplication by 2.

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