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    • CommentRowNumber1.
    • CommentAuthorDavidRoberts
    • CommentTimeAug 24th 2021

    Added doi link and pages for Spanier’s original article

    diff, v6, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeAug 24th 2021

    Also added pointer to p. 12

    for the suggestion that the term “quasi-topos” might have been inspired by Spanier’s example.

    While I was at it I have

    adjusted the lead-insentences a little for better flow,

    added a bunch of hyperlinks to keywords,

    added cross-links back to here from places like conventient category of topological spaces

    added a floating context menu.

    diff, v7, current

    • CommentRowNumber3.
    • CommentAuthorʇɐ
    • CommentTimeApr 3rd 2024
    • (edited Apr 3rd 2024)

    Spanier doesn’t use the Grothendieck topology of open covers (open subsets of compact Hausdorff spaces typically aren’t compact Hausdorff themselves), but rather the topology of finite surjective families.

    According to Yamazaki, condensed sets can also be defined as certain sheaves on this site (https://ncatlab.org/nlab/revision/condensed+set/31#equivalence_of_sites); is there a nice relation between the two concepts?

    diff, v9, current