X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-arrow.tex;h=60530cb71020f3902e3b4c11f9a6498814241f5e;hp=4dd5f88bc6053dd224dd3c7b138ff757c78fe301;hb=e6bb4f9ae2d3785b331388703b8793e0409d30af;hpb=ba0227140d34fe1c8cacdb4996b5896aec4c4013

diff --git a/mjo-arrow.tex b/mjo-arrow.tex
index 4dd5f88..60530cb 100644
--- a/mjo-arrow.tex
+++ b/mjo-arrow.tex
@@ -5,7 +5,11 @@
 \def\havemjoarrow{1}
 
 
-\input{mjo-common}
+\input{mjo-common} % for \of, at least.
+
+\ifx\operatorname\undefined
+  \usepackage{amsopn}
+\fi
 
 % The identity operator/arrow on its argument.
 \newcommand*{\identity}[1]{ \operatorname{id}_{{#1}} }