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Type the following in a Mathematica DisplayFormula cell(other styles may also encounter this problem): Esc+l+|+Esc and Esc+r+|+Esc, and save as LaTeX.

Note: See the difference of the character between | |.

$z$ and $z_1$, $|z|$, $|z_1|$

Cell[BoxData[
 RowBox[{"\[LeftBracketingBar]", 
 SubscriptBox["z", "1"], "\[RightBracketingBar]"}]], "DisplayFormula"]

with subscript, then...

Mathematica inserts extra \left and \right for absolute values in the LaTeX output:

%% AMS-LaTeX Created by Wolfram Mathematica 9.0 : www.wolfram.com
\documentclass{article}
\usepackage{amsmath, amssymb, graphics, setspace}
\newcommand{\mathsym}[1]{{}}
\newcommand{\unicode}[1]{{}}
\newcounter{mathematicapage}

\begin{document}
    \[
    \left\left| Z_1+Z_2\right\right| \leq \left\left| Z_1\right\right| +\left\left| Z_2\right\right|
    \]
    \end{document}

What should I do to get valid output that LaTeX will accept?

share|improve this question
1  
Please provide the original code that was converted and some info on how this was done to clarify your question and enable reproduction. –  Yves Klett Jul 28 '13 at 9:43
    
@YvesKlett here, mathematica.stackexchange.com/questions/29314/… –  HyperGroups Jul 28 '13 at 11:36
    
My preference is to have self-contained questions / MWEs... –  Yves Klett Jul 28 '13 at 11:43
    
@YvesKlett fine,,,since this question was asked in Tex.SE,...and that was asked in Math.SE...You can type Esc l|Esc and Esc r| Esc in one DisplayFormula cell. –  HyperGroups Jul 28 '13 at 12:09
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migrated from tex.stackexchange.com Jul 28 '13 at 7:38

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