From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: unexpected appearance of x^2 in pdf file
Date: Sun, 12 May 2013 15:07:04 +0200
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	(Paul Stansell's message of "Sun, 12 May 2013 10:07:51 +0100")
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To: Paul Stansell <paulstansell@gmail.com>
Cc: emacs-orgmode@gnu.org

Hello,

Paul Stansell <paulstansell@gmail.com> writes:

> I've also come across a couple of other unexpected results exporting
> other latex equations to pdf.  Examples are given in the attached org
> file.  Both are quite trivial with easy work-arounds.  In both cases,
> because the embedded png equations (displayed by C-c C-x C-l) are
> formatted correctly, the problem in the exported pdf file might go
> unnoticed.

> \[ x = y 
>          +1 \]
>
> \[ x = y 
>          + 1 \]

This is to be expected. In the second case, the second line defines
a list item, which has precedence over any LaTeX snippet.

> \[ x = \begin{array}{cc}
>       y & u \\
>       z & v
> \end{array} \]
>
> \[ x = 
>    \begin{array}{cc}
>       y & u \\
>       z & v
>    \end{array} \]

I think this is because of a limitation on the number of lines a LaTeX
snippet can span across (IIRC, 3 is the maximum).

In both cases, I suggest to use LaTeX environments instead:

  \begin{equation*}
  x = y
  + 1
  \end{equation*}

and

  \begin{equation*}
  x =
  \begin{array}{cc}
    y & u \\
    z & v
  \end{array}
  \end{equation*}


Regards,

-- 
Nicolas Goaziou