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nLab > Latest Changes: weakly initial object

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  1. init commit of weak(ly) initial algebras, based on the definition from Philip Wadler’s Recursive Types for Free! This is my first nLab new-page commit and please feel free to improve this page.

    anqurvanillapy

    v1, current

    • CommentRowNumber2.
    • CommentAuthoranqurvanillapy
    • CommentTimeJan 8th 2019

    Changed page name into weakly initial' since it is unrelated to anything aboutalgebra’.

    diff, v2, current

    • CommentRowNumber3.
    • CommentAuthoranqurvanillapy
    • CommentTimeJan 8th 2019
    I changed the page name into `weakly initial' since it is unrelated to anything about `algebra'.
    • CommentRowNumber4.
    • CommentAuthorMike Shulman
    • CommentTimeJan 8th 2019

    Thanks! I changed the name again to weakly initial object, since nLab pages are generally named with nouns, but kept “weakly initial” as a redirect. In general when changing the names of pages it’s useful to keep the old ones as redirects; a redirect is usually added automatically by the software when changing the name (maybe you have to click back in the main text box?) although we usually move all the redirects to the bottom instead of the top.

    I also cross-linked with weak colimit.

    diff, v3, current

    • CommentRowNumber5.
    • CommentAuthorvarkor
    • CommentTimeNov 1st 2022

    Added a reference.

    diff, v4, current

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeNov 1st 2022

    I have tried to polished-up this entry a little:

    Adjusted the wording in the Definition section.

    Fixed broken link to weak adjoint.

    Added cross-link with strict initial object.

    Added floating context menus “Category theory” and “Limits and colimits”.

    diff, v5, current

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