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What’s the good way to typeset here the notation used in sequent caluclus, in rewrite rules or for adjuncts: two terms, one above and one below a horizontal line?
Is
\frac
the way to go? Sounds wrong. Though the output looks okay.
That’s the method I’ve used, and it works fine for inference rules. It doesn’t seem to be possible to nest \frac
s the way you’d want for proof trees, though.
Edit: hmm, looks like it worked for your mini-example at sequent calculus.
FWIW, in stand-alone LaTeX, I use Sam Buss’ style file.
I don’t know how that might be adapted to the nlab/Itex, though.
For this, I’d recommend thinking what you want the end result to look like, figure out the MathML (and possibly CSS) needed to get it looking like that, then work out what iTeX commands are needed to produce it. Thus if \frac
produces the correct MathML, use \frac
.
Edit: I took a quick look at the style file. There’s a lot of box hackery going on in that file so it isn’t directly transportable to iTeX due to the differences between maths on the page and maths on the screen.
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