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I want to open a latex file but it gives error , it can not understand 

\QATOP

and 

 \func

\begin{equation}
Li_{-r}\left( x\right) =\frac{\sum_{j=0}^{r}\left\langle \QATOP{r}{j}%
 \right\rangle x^{r-j}}{\left( 1-x\right) ^{r+1}} \label{3}
\end{equation}% 


\begin{equation*} \zeta \left( s\right) =\frac{1}{\Gamma \left( s\right) }\int_{0}^{\infty }t^{s-1}\frac{e^{-t}}{1-e^{-t}}dt\text{ \ for }\func{Re}\left( s\right) >1% \text{.} \end{equation*} –

how can I resolve it

Torbjørn T.
  • 206,688
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    Can you give an example? The commands are not defined in standard classes or packages, so it's quite normal that TeX/LaTeX doesn't understand them. – egreg Jun 13 '14 at 17:47
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    Is your output from Scientific Word? Then you should have to input tcilatex to get these definitions. – Andrew Swann Jun 13 '14 at 17:54
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    Please edit your question rather than trying to post code in the comments. Also please post a complete file rather than snippets. – Andrew Swann Jun 13 '14 at 17:55
  • I don't have tcilatex, how can I get it? –  Jun 13 '14 at 17:55
  • A google search gives several hits. – Andrew Swann Jun 13 '14 at 17:59
  • E.g., ftp://ftp.mackichan.com/sw25/updates/tcilatex.tex. – Mico Jun 13 '14 at 18:03
  • is there any way to write $\left\langle \QATOP{r}{j}\right\rangle $ without \QATOP ? –  Jun 13 '14 at 18:09
  • tcilatex.tex contains \def\QATOP#1#2{{#1 \atop #2}}, so you can just put this definition at the top of your file. \atop is now generally deprecated because of its strange syntax, see http://tex.stackexchange.com/q/119096/15925 for an alternative. – Andrew Swann Jun 13 '14 at 18:28

1 Answers1

2

The simplest way to get this to compile is to insert 

\input{tcilatex}

near the top of your file, having found a copy of tcilatex.tex and placed in the same directory as your file. This is rather an old format, which I think comes from Scientific Word, and an alternative would be to provide new definitions. However there are many so this will be quite a bit of work. Anyway the two you ask for are covered by the following:

Sample output

\documentclass{article}

\usepackage{amsmath,amsopn}
\newcommand{\QATOP}[2]{\genfrac{}{}{0pt}{}{#1}{#2}}
\newcommand{\func}[1]{\operatorname{#1}}

\begin{document}
\begin{equation}
  Li_{-r}\left( x\right) =\frac{\sum_{j=0}^{r}\left\langle \QATOP{r}{j}%
 \right\rangle x^{r-j}}{\left( 1-x\right) ^{r+1}} \label{3}
\end{equation}% 


\begin{equation*}
  \zeta \left( s\right) =\frac{1}{\Gamma \left(
    s\right) }\int_{0}^{\infty }t^{s-1}\frac{e^{-t}}{1-e^{-t}}dt\text{
  \ for }\func{Re}\left( s\right) >1% 
  \text{.}
\end{equation*}

\end{document}
Andrew Swann
  • 95,762