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    • CommentRowNumber1.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 18th 2018

    Do other people see these final symbols as identical at Serre intersection formula?

    Given a regular scheme XX and subschemes Y,ZY,Z with defining ideal sheaves ,𝒥\mathcal{I},\mathcal{J}

    • CommentRowNumber2.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 18th 2018

    and here?

    • CommentRowNumber3.
    • CommentAuthorAli Caglayan
    • CommentTimeDec 18th 2018

    This is to do with the mathcal font being weird. I’ve brought this up before. For some reason mathcal on nlab is this weird scripty version. It should really be like it is on mathoverflow.

    • CommentRowNumber4.
    • CommentAuthoratmacen
    • CommentTimeDec 18th 2018
    They look different for me, and they both display on nLab, but on nForum, the second one is a Unicode box.
    • CommentRowNumber5.
    • CommentAuthorMike Shulman
    • CommentTimeDec 18th 2018

    They look different to me, and each is the same in both places, neither being a unicode box.

    • CommentRowNumber6.
    • CommentAuthorTim_Porter
    • CommentTimeDec 19th 2018

    FWIW: On my MacBook using Firefox, they display correctly both on the nLab page and here. I tested on Safari and although looking different from here, they are distinct, and readable, in both the Lab and here.

    • CommentRowNumber7.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 19th 2018

    I’m using Chrome. At MathOverflow they differ for me.

    • CommentRowNumber8.
    • CommentAuthorAli Caglayan
    • CommentTimeDec 19th 2018

    I am using Chrome too, this is probably the problem. If I remember correctly Chrome stopped supporting mathml a while back, so is this really a MathJax problem? In which case Richard could reconfigure it? I am only guessing because MathOverflow uses MathJax aswell if I remember correctly.

    • CommentRowNumber9.
    • CommentAuthorRichard Williamson
    • CommentTimeDec 19th 2018
    • (edited Dec 19th 2018)

    Here is the earlier thread. As in #6 there, there is a significant difference between the way MathJax is being used on MathOverflow and here; MathJax is parsing LaTeX directly on MathOverflow, whilst it is parsing MathML on the nLab.

    Looking at the HTML source, it looks like the MathML produced has <mi>I</mi>, where the I is already a unicode calligraphic symbol. It might be that if one used <mi mathvariant="script">I</mi> or something instead, using only an ASCII I, then MathJax would render it correctly. This would involve changing the Itex2MML source, though. For now, I would suggest just to change the page so that the two letters are distinguishable, e.g. by not using mathcal or by using different letters.

    • CommentRowNumber10.
    • CommentAuthorTim_Porter
    • CommentTimeDec 19th 2018

    Following David’s comment about Chrome I tried it on my machine and the letters do look similar but the J has a loop on the bottom whilst the I does not. The two letters are not looking the same.

    • CommentRowNumber11.
    • CommentAuthorDavid_Corfield
    • CommentTimeDec 20th 2018

    Strange. They’re identical for me.

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