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  1. Fixup description of birkhoff duality. Add small section on free distributive lattices.

    Gershom

    diff, v19, current

  2. A bit more description of birkoff duality and yoneda.

    Gershom

    diff, v19, current

    • CommentRowNumber3.
    • CommentAuthorTodd_Trimble
    • CommentTimeMar 31st 2020

    Hm, I’ll have to come back to this. I don’t like the erasure of “baby form of” (Birkhoff duality) – the finite form of the duality not being full-fledged “adult” Birkhoff duality – but perhaps “finite” or “finitistic” instead of “baby” and you’d be happy?

    There is at least one more strikeout whose appropriateness I’d have to consider when I have more time.

    • CommentRowNumber4.
    • CommentAuthorJohn Baez
    • CommentTimeMar 31st 2020

    Some corrections by me, and some additions by someone else, which look generally to be improvements.

    diff, v22, current

  3. Added that one direction of each distributivity law holds in any lattice.

    Greg Price

    diff, v24, current

    • CommentRowNumber6.
    • CommentAuthorgregprice
    • CommentTimeJul 22nd 2022

    Added link to OEIS entry for the Dedekind numbers.

    diff, v25, current

  4. A new Dedekind number was calculated in 2023.

    Abel Jansma

    diff, v26, current