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  1. null edit to start a discussion page

    Anonymous

    diff, v8, current

    • CommentRowNumber2.
    • CommentAuthorGuest
    • CommentTimeJul 19th 2022

    there are also loci from Euclidean geometry, which I don’t think have a page on the nlab.

    • CommentRowNumber3.
    • CommentAuthorGuest
    • CommentTimeJul 19th 2022

    https://en.wikipedia.org/wiki/Locus_(mathematics)

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeJul 19th 2022

    Thanks for the heads-up, I didn’t remember that this page exists (created in and essentially untouched since 2013) and, yes, that’s not the canonical content one has a right to expect to see on a page with this title. Of course, the page’s very first “section” Disambiguation means to deal exactly with this issue, but still it would be better to have here a discussion of the ordinary notion of “locus” (more along the lines of the Wikipedia page referenced above) and relegate discussion of Joyal’s notion of “\infty-loci” to elsewhere.

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeJul 20th 2022

    I have cleared and rewritten the entry. Will move the previous content to Joyal locus.

    diff, v9, current