In math-environment with typewriter.sty, some symbols like \forall, \in, \sum,\prod do not appear.

[raydsameshima]

Dear David,

Thank you very much for this lovely .sty.

On Ubuntu 18.04 with TeXstudio 2.12.6 (6631:16db084dae24), lualatex (This is LuaTeX, Version 1.0.4 (TeX Live 2017/Debian)), some mathmatical symbols do not appear.
In addition to them, \mathbb{N} also does not work.

[davidcarlisle]

it depends which font you use, if you use a big unicode monospace font then presumably at least some of them may appear. for \mathbb the simplest thing would be to define it to do nothing, but I suppose it would be possible to make it special-case some letters so N is IN and R is IR for example,

[raydsameshima]

Dear David,

Thanks for your quick reply.
Here I've used your .sty and, I guess, it calls cm-unicode.

This is the link for my small .tex file which generates the following .pdf file.

test.pdf