# pitchfork in plain TeX

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?

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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`.)

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actually, `amssym.tex` loads `amssym.def`, so you need only the one line, `\input ammsym`. –  barbara beeton Sep 15 '11 at 18:28
@barbara: thanks, I corrected my answer. –  morbusg Sep 15 '11 at 19:00
This works on my system. Thank you! –  Sam Nead Sep 15 '11 at 22:25