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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeNov 13th 2022

    a stub, for the moment just so as to make the link work.

    v1, current

    • CommentRowNumber2.
    • CommentAuthorvaleriadepaiva
    • CommentTimeFeb 15th 2023
    hi, I think you have used the term co-unicity in the section 3 of the entry Not counitality.
    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeFeb 15th 2023
    • (edited Feb 15th 2023)

    Thanks. I have fixed it in that entry (as now announced there). Please feel invited to fine-tune further, if need be.

    • CommentRowNumber4.
    • CommentAuthorperezl.alonso
    • CommentTimeOct 24th 2023


    diff, v2, current

    • CommentRowNumber5.
    • CommentAuthorJ-B Vienney
    • CommentTimeOct 25th 2023
    • (edited Oct 25th 2023)

    I don’t see the εid\epsilon \otimes id and idεid \otimes \epsilon in the diagrams, on my browser. Does it work for you?

    • CommentRowNumber6.
    • CommentAuthorperezl.alonso
    • CommentTimeOct 25th 2023

    For some reason it shows a very little square in front of id\text{id} in the first diagram and of ε\epsilon in the second one, but other than that it works.

    • CommentRowNumber7.
    • CommentAuthorUrs
    • CommentTimeOct 25th 2023
    • (edited Oct 25th 2023)

    With Firefox on Windows, I have the recurring problem that sometimes all formulas on a page are showing only about half their symbols, strangely. Reloading the page fixes this.

    Maybe that’s the same bug you are seeing.

    • CommentRowNumber8.
    • CommentAuthorJ-B Vienney
    • CommentTimeOct 25th 2023
    • (edited Oct 25th 2023)

    With Chrome on a Mac, it works, but I see a little point at the end of these formulas. With Safari, I only see these points.

    • CommentRowNumber9.
    • CommentAuthorRodMcGuire
    • CommentTimeOct 25th 2023

    the 2 diagrams had


    I removed the last three characters. They were causing a period to appear in funny places in my Firefox display. Does it woek better now in other browsers?

    diff, v4, current

    • CommentRowNumber10.
    • CommentAuthorUrs
    • CommentTimeOct 25th 2023

    I have redone the diagrams in tikzcd-code. Besides not being subject to that display bug, tikzcd gets the diagonal arrows right.

    By the way, I think it is good style to have punctuation marks after formulas, if the ambient text requires this. But they should be typeset not after the array-environment, but after the last symbol inside the array-environment, and encapsulated there in \mathrlap in order not to affect the alignment.

    diff, v5, current

  1. Eliminated an abuse of notation in the diagram after someone inexperienced with monoidal categories reported being tripped up by it.

    As a general rule, abuse of notation appears to be helpful for experts who won’t get tripped up by it and appreciate the reduced “noise”, and for people who don’t really need to understand the details because they only need a passing familiarity, but harmful to people who aren’t experts and do want/need to understand the details.

    Patrick Nicodemus

    diff, v6, current