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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeOct 27th 2021

    For the moment just a blind definition, to satisfy links at free group actions on n-spheres

    v1, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeOct 27th 2021

    I have added more references now, including the original reference:

    I admit that it’s not clear to me right now how the definition there agrees with the one I have typed into the entry, nor how either agrees with what other authors say.

    The definition currently in the entry is that stated in the abstract of Madsen, Thomas & Wall 1983, and I have now referenced it as such.

    diff, v2, current