\autoref does not show the right reference name

Question

In my tex document I have 3 environments for Definition, Theorem and Lemma.

The numbering of them should be continuous as follows:

Definition 1.1
Theorem 1.2
Lemma 1.3
Definition 1.4
...

I got it by the following:

\newtheorem{defn}{Definition}[chapter]
\newtheorem{theorem}[defn]{Theorem}
\newtheorem{lemma}[defn]{Lemma}

\def\defnautorefname{Def.}
\def\theoremautorefname{Thm.}
\def\lemmaautorefname{Lem.}

So far so good. Then I want to make reference to each of them using \autoref, for instance:

\autoref{defn:1}    
\autoref{theorem:1}    
\autoref{lemma:1}

But what I obtain is only:

Def. 1.1
Def. 1.2
Def. 1.3

and NOT as I would like to have:

Def. 1.1
Thm. 1.2
Lem. 1.3

My full code:

\documentclass[a4paper,11pt]{report}

\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage{ucs}
\usepackage[utf8x]{inputenc}


\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{hyperref}

\newtheorem{defn}{Definition}[chapter]
\newtheorem{theorem}[defn]{Theorem}
\newtheorem{lemma}[defn]{Lemma}


\def\defnautorefname{Def.}
\def\theoremautorefname{Thm.}
\def\lemmaautorefname{Lem.}


\parindent0pt


\begin{document}

\chapter{Chapter 1}

\begin{defn}
 \label{defn:1}
 Def 1
\end{defn}


\begin{theorem}
 \label{theorem:1}
 Theorem 1
\end{theorem}


\begin{lemma}
 \label{lemma:1}
 Lemma 1
\end{lemma}


\begin{defn}
 \label{defn:2}
 Lemma 1
\end{defn}




Here should be Definition: \autoref{defn:1}

Here should be Theorem: \autoref{theorem:1}

Here should be Lemma: \autoref{lemma:1}

\end{document}

The description of \autoref in the hyperref manual is useful. — Torbjørn T., Nov 08 '15 at 13:58
Thank you for the hint. I also read it, but I cannot find the way to solve my problem :( — John Ironbreaker, Nov 08 '15 at 13:59
I don't know about cleveref. Could you please give me an example with cleveref related to my problem? Thank you. — John Ironbreaker, Nov 08 '15 at 14:02
Just found amsthm with shared counters messes up autoref references by the way. — Torbjørn T., Nov 08 '15 at 14:07

Mico · Accepted Answer · 2015-11-08T14:54:35.503

The cleveref package provides the \cref macro, which is even more clever [pun intended] than \autoref. For instance, it can take multiple arguments. In addition, \cref is better than \autoref at figuring out which label to use when several environments share a common counter, as is the case with definition, theorem, and lemma in your example

In the following example, the cleveref package is loaded with the option nameinlink. This makes both the label and the number part of the hypertarget, mimicking the look of cross-references generated by \autoref.

\documentclass[a4paper,11pt]{report}

\usepackage[english]{babel}
\usepackage[T1]{fontenc}
%%\usepackage{ucs} % don't use it; it's deprecated
\usepackage[utf8]{inputenc}

\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage[colorlinks]{hyperref}
\usepackage[nameinlink]{cleveref}

\newtheorem{defn}{Definition}[chapter]
\newtheorem{theorem}[defn]{Theorem}
\newtheorem{lemma}[defn]{Lemma}

\crefname{defn}{definition}{definitions}
\Crefname{defn}{Definition}{Definitions}


%\def\defnautorefname{Def.}
%\def\theoremautorefname{Thm.}
%\def\lemmaautorefname{Lem.}

\setlength{\parindent}{0pt}

\begin{document}

\setcounter{chapter}{1}
\begin{defn} \label{defn:1} Def 1 \end{defn}
\begin{theorem} \label{theorem:1} Theorem 1 \end{theorem}
\begin{lemma} \label{lemma:1} Lemma 1 \end{lemma}
\begin{defn} \label{defn:2} Definition 2 \end{defn}

Here are two Definitions: \Cref{defn:1,defn:2}

Here is a Theorem: \Cref{theorem:1}

Here is a Lemma: \Cref{lemma:1}

\end{document}

\autoref does not show the right reference name

1 Answers1