[Tex/LaTex] Cross reference in LyX

cross-referencinghyperreflyx

I would like to use the \autoref function in LyX, so that when I refer to a labeled figure or theorem, it is typeset as "Figure #" or "Theorem #". According to this answer, I can redefine the \ref command as \autoref using

\let\ref\autoref

at the beginning of the document. However, this creates a problem: when I refer to an equation, it comes out as "(Equation #)". This is because LyX does not use \eqref{eq_label}, but rather (\ref{eq_label}) to refer to equations.

So my question is: Is there a way to configure LyX so that it uses \eqref to refer to equations, and \autoref to refer to figures, theorems, etc.

I'm using the article document class and MikTeX distribution.

Best Answer

Using \autoref is actually simpler and has an nice advantage! The area for clicking on a hyperlink is larger (see example below) since the "type names" are included in the clickable area.

For that, we insert following code in the LyX Preamble.

\AtBeginDocument{%
\let\ref\autoref
\renewcommand\equationautorefname{\@gobble}
}

The command \renewcommand\equationautorefname{\@gobble} is used for equation references to remove the word "Equation~". In the example the styles "Reference" and "(<Reference>)" are used:

lyx document output

Related Solutions

[Tex/LaTex] Renew \ref command doesn’t work

Something (eg hyperref) is likely redefining \ref in the \AtBeginDocument hook. You can try moving your definitions out of the preamble. For the kind of thing you are trying to do I would recommend checking into the cleveref package, which can do many intelligent things with referencing commands.

[Tex/LaTex] How to number subtheorems hierarchically

Update version 2.

\documentclass{scrartcl}   
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 

\newtheorem{theorem}{Theorem}[section]
\newtheorem{subtheorem}{Sub-Theorem}[theorem]

 \newenvironment{proof}[1][Proof]{\begin{trivlist}
\item[\hskip \labelsep {\bfseries #1}]}{\end{trivlist}}


\newcommand{\qed}{\nobreak \ifvmode \relax \else
      \ifdim\lastskip<1.5em \hskip-\lastskip
      \hskip1.5em plus0em minus0.5em \fi \nobreak
      \vrule height0.75em width0.5em depth0.25em\fi}

\begin{document}
\section{Introduction}

\begin{theorem} 
  \label{main}
 If $x=2$, $x^3=8$. 
\end{theorem}   

\begin{proof} 

   Let $x=2.$     
  \begin{subtheorem}   
    \label{sub}   
      For all $x$ and all natural numbers $n$, $x^n = x*x*...*x$ (n times).
  \end{subtheorem}


\begin{proof} 
  By induction. \qed
\end{proof} 

(Theorem \ref{main}'s proof continued) by Claim \ref{sub}, $x^3 = 2*2*2 = 8$  .\qed

\end{proof}       
\end{document}

enter image description here

With amsart Now I think (not sure) that your problem comes from Lyx. I think you try to use tag given in the menu but I can't give you a correct answer because I don't know Lyx.Perhaps it's possible to modify the menus, the tags etc. but I don't know ! :(

\documentclass{amsart}   
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 

\newtheorem{thm}{Theorem}[section]
\newtheorem{lem}{Lemma}[section]
\newtheorem{cor}{Corollary}[section]
\newtheorem{prop}{Proposition}[section]
\newtheorem{crit}{Criterion}[section]
\newtheorem{alg}{Algorithm}[section]
\theoremstyle{definition}
\newtheorem{defn}{Definition}[section]
\newtheorem{claim}{Claim}[thm] 
\newtheorem{other}{Other}[defn] 


\begin{document}
\section{Introduction}

\begin{defn} 
a new definition that uses this definition 
\end{defn}  

\begin{thm} 
  \label{main}
 If $x=2$, $x^3=8$. 
\end{thm}   

\begin{proof} 

   Let $x=2.$     
  \begin{claim}   
    \label{sub}   
      For all $x$ and all natural numbers $n$, $x^n = x*x*...*x$ (n times).
  \end{claim}


\begin{proof} 
  By induction. 
\end{proof} 

(Theorem \ref{main}'s proof continued) by Claim \ref{sub}, $x^3 = 2*2*2 = 8$.

\end{proof}  

\begin{defn} 
a new definition that uses this definition 
 \begin{other}
     other definition
 \end{other}

\end{defn}        
\end{document}

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Renew \ref command doesn’t work

[Tex/LaTex] How to number subtheorems hierarchically

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