Put \ifx guards on most other package includes, too.

[mjotex.git] / mjo-misc.tex

diff --git a/mjo-misc.tex b/mjo-misc.tex
index f73fe142e3a41f105f8e3d085ca9523468eb7744..24421457fab2d4a4bd474473b96bf470f221d351 100644 (file)
--- a/mjo-misc.tex
+++ b/mjo-misc.tex
@@ -5,7 +5,9 @@
 \def\havemjomisc{1}
 
 
-\usepackage{amsmath}
+\ifx\operatorname\undefined
+  \usepackage{amsopn}
+\fi
 
 % The cardinality of a set. The |X| notation conflicts with the
 % absolute value, and the meaning of card(X) is clear at once, so we