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    • CommentRowNumber1.
    • CommentAuthorZhen Lin
    • CommentTimeFeb 10th 2015

    Created Beck module, mentioned it (once) on the tangent category page.

    • CommentRowNumber2.
    • CommentAuthorTim_Porter
    • CommentTimeFeb 11th 2015

    There was work done on the ‘derived module’ of a group homomorphism in

    R. H. Crowell, The derived module of a homomorphism, Advances in Math., 5, (1971), 210 – 238.

    This is related to both Beck modules and to Fox derivatives. (i discussed this in the Menagerie, and it relates to the linearisation of crossed complexes in Ronnie Brown’s work.)

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeFeb 11th 2015
    • (edited Feb 11th 2015)

    Very nice! I have added a few more pointers to this from other relevant entries.

    I have also added pointer to Beck 67.

    • CommentRowNumber4.
    • CommentAuthorTim_Porter
    • CommentTimeAug 28th 2018
    • (edited Aug 28th 2018)

    Added a reference to a preprint by Markus Szymik relating Beck modules of quandles to the detection of the unknot. NB: Richard, he is at Trondheim.

    diff, v3, current

    • CommentRowNumber5.
    • CommentAuthorRichard Williamson
    • CommentTimeAug 28th 2018
    • (edited Aug 28th 2018)

    Hehe, yes, Markus and I were colleagues for a while, and meet occasionally :-). He is a very nice chap! I believe is on sabbatical at the moment, in Cambridge I think.

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