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nLab > Latest Changes: geometric stack

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  1.  
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeFeb 22nd 2010
    • (edited Feb 22nd 2010)

    added an Idea-section and a further reference to geometric stack.

    I hope we can eventually fully harmonize the definitions. It seems to me that the definitions in the literature vary slightly on the strength of their conditions.

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeMar 2nd 2010

    more details at geometric stack (finally mentioned groupoid objects) and more references.

    Still a stubby entry, though!

    • CommentRowNumber3.
    • CommentAuthorTim_Porter
    • CommentTimeSep 1st 2018
    • (edited Sep 1st 2018)

    There was a grey link here to Cech groupoid. The source showed it said ‘Cech groupoid of a functor|Cech groupoid’, so I deleted the first part of the link leaving just Cech groupoid. This may not be the best possible solution but gets rid of the grey link.

    diff, v23, current

    • CommentRowNumber4.
    • CommentAuthorRichard Williamson
    • CommentTimeSep 1st 2018
    • (edited Sep 1st 2018)

    Thanks Tim! Looks like the best solution for the moment to me.

    [Edited to remove initial irrelevant comment.]

  5. In definition section, it says that

    “ There are slight variations in the literature on what precisely is required of a stack X on a site C with subcanonical topology in order that it qualifies as geometric.”

    Though it has already been mentioned in introduction, I was thinking, can adding “choice of p that gives an appropriate groupoid object” make it any clearer?

1 to 5 of 5

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