Mikael P. Sundqvist schrieb am 05.03.2020 um 20:48:
Oh, I had not. It looks better with collapsing=1, indeed. A few neq questions comes to me:

Does ConTeXt not use the same prime character as in TeX/LaTeX? Or has something changed in latin modern? See the attached pdf files (derivatives.pdf from ConTeXt and primetime-crop.pdf from lualatex). The prime character looks more slanted in ConTeXt. It also almost looks like it is cut horizontally at the bottom of the character. Also, the space between the two x in the subscript looks a bit large to me. Is that easily tuned?

ConTeXt uses the OpenType version of the Latin Modern math font
while your LaTeX file uses the older Type1 version of the font
which uses multiple files for the different sizes. You can see this
when look into the document information which can be done
with your PDF viewer (or a command line tool like pdffonts).

Wolfgang