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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeFeb 13th 2015

    added references to essentially algebraic theory. Also equipped the text with a few more hyperlinks.

    • CommentRowNumber2.
    • CommentAuthorspitters
    • CommentTimeOct 12th 2018

    Clarification about partial Horn logic

    diff, v18, current

    • redirected “Cartesian theory” here
    • added brief definition of cartesian theory.

    Steve Vickers

    diff, v20, current

  1. Added “cartesian logic” as related topic.

    “Cartesian theory” really ought to be redirected here, as the notions are equivalent. I am attempting to do that.

    Steve Vickers

    diff, v20, current

    • CommentRowNumber5.
    • CommentAuthorDavid_Corfield
    • CommentTimeJul 18th 2019

    Added a comment about Gabriel-Ulmer duality.

    diff, v21, current

    • CommentRowNumber6.
    • CommentAuthoratmacen
    • CommentTimeSep 27th 2019

    In another thread Mike said:

    In particular, one selling point of intrinsic syntax seems to be its essentially-algebraic character

    I don’t understand the details of the connection between essentially algebraic theories and type systems. Which type systems are essentially algebraic? Is it exactly those with intrinsic syntax? How do I rigorously tell when syntax is “intrinsic”, in an arbitrary metalanguage?

    • CommentRowNumber7.
    • CommentAuthorDmitri Pavlov
    • CommentTimeApr 19th 2020

    Transferred material from cartesian theory > history.

    diff, v22, current

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