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nLab > Latest Changes: holomorph

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  1. Adding table of contents and a link to the Wikipedia article

    Anonymouse

    diff, v5, current

    • CommentRowNumber2.
    • CommentAuthorDavidRoberts
    • CommentTimeJun 25th 2024

    The holomorph occurs very naturally as the group of arrows of the 2-group (groupoid internal to Groups).

    I’m not sure what this sentence is trying to say. What 2-group, precisely?

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeJun 26th 2024

    While I didn’t write this, I suppose what is meant is the automorphism 2-group of GG, in its strict incarnation corresponding to the crossed module G→Aut(G)G \to Aut(G).

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeJun 26th 2024

    have re-written the entry

    diff, v6, current

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