General ⇒ command \th already defined

[Lumy]

Hello,

Here is my preamble:

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\input{aipcheck}

\documentclass[
    ,final            % use final for the camera ready runs
%%  ,draft            % use draft while you are working on the paper
  ,numberedheadings % uncomment this option for numbered sections
%%  ,                 % add further options here if necessary
  ]
  {aipproc}

\layoutstyle{6x9}



\usepackage{amsmath,amssymb,amsthm}

\numberwithin{equation}{section} 
\theoremstyle{plain}
\newtheorem{df}{Definition}[section]
\newtheorem{th}[df]{Theorem}
\newtheorem{prop}[df]{Proposition}
\newtheorem{lem}[df]{Lemma}
\newtheorem{cor}[df]{Corollary}
\newtheorem{rem}[df]{Remark}

and I can't compile. I get the Latex Error: Command \th already defined


Thank you.

[frabjous]

Is there a reason you can't change

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\newtheorem{th}[df]{Theorem}

to something else, e.g.:

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\newtheorem{theo}[df]{Theorem}

and then change all the:

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begin{th}
..
\end{th}

to

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begin{theo}
..
\end{theo}

?

Or does that not solve your problem?