I was asked the following question:
How do I get get
\pitchfork
in plain TeX?
He tried \input mssymb
and \input amssymb
but neither works. More generally, is it possible to get ams symbols to work under plain TeX?
Sure,
\input amssym
$\pitchfork$
\bye
If one doesn't need all of the ~200 new control sequences, but only the additional fonts (ie. \frak
for fraktur and \Bbb
for blackboard bold), and a few extra symbols (see amsfndoc [PDF], p. 18–19), one can just load the amssym.def
.
(Note, however, that the \pitchfork
symbol is not included in amssym.def
.)
amssym.tex
loads amssym.def
, so you need only the one line, \input ammsym
.
Commented
Sep 15, 2011 at 18:28