# [OS X TeX] Left Justified Symbol

Mon Apr 27 23:20:47 CEST 2009

Rose Charlie wrote:
[]
> Very slick, and it does *almost* exactly what I need ... what's lacking
> is that it's not in the "equation" environment so no equation number is
> generated. And, being the LaTeX amateur that I am, I don't know how to
> produce that myself. I *will* try to figure it out, though.

If your equation is not numbered, you can simply use \leqno:

$$your equation \leqno\blacktriangleright$$

For numbered equations, the following does the trick

\def\triangleeq{%
\let\theeq\theequation
\def\theequation{\theeq
\rlap{\hskip -\displaywidth\ $\blacktriangleright$}}}

$$\triangleeq your equation$$

Just use the command \triangleeq inside the equation environment where
you want the triangle. The triangle will be placed at the beginning of
the line that has the equation number.

--
Martin