ruberman@BINAH.CC.BRANDEIS.EDU (03/07/91)
I wonder if anyone has a TeX or LaTeX macro that will display (nicely) the
restriction of functions in a mathematical paper. That is, the name of the
function (say `f') followed by a vertical line extending below the current line
with some subspace. I can do this in many ways, but none of them seem to look
right. For example: $f_{|X}$ doesn't look right since the vertical line
doesn't extend high enough, and the X is lowered too much. The best I can come
up with is variations on the theme of: $f\lower.5ex\hbox{$|X$}$, which still
doesn't quite make it. In the paper in question, this construction occurs
in places in subscripts, so a \mathchoice construction is presumably needed.
If anyone has a way of doing this which is in reasonable accordance with
standard principles of mathematical typography, please let me know.
Daniel Ruberman
ruberman@binah.cc.brandeis.edu
ruberman@brandeis.bitnet krab@iesd.auc.dk (Kresten Krab Thorup) (03/08/91)
Hi Daniel
What you ask for, is already there; try
$\left.f\right|_x=\int_{\mathrm{A}}x^2\;dx$
^^^^^^^^^
/Kresten Krab Thorup
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LaTeX's not crap --- that's me