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    • CommentRowNumber1.
    • CommentAuthorMike Shulman
    • CommentTimeNov 26th 2017

    I added to field a mention of some other constructive variants of the definition, with a couple more references.

    • CommentRowNumber2.
    • CommentAuthorDavidRoberts
    • CommentTimeNov 26th 2017

    I fixed up the DOI link for Johnstone’s paper (at field and at local ring), since the geniuses at Elsevier use parentheses in their DOIs, which break markdown syntax.

    For reference, one needs to replace (nn) in the DOI url by %28nn%29.

    • CommentRowNumber3.
    • CommentAuthorMike Shulman
    • CommentTimeNov 26th 2017

    Thanks! I’ve noticed that before, but always forget about it.