mjo-common: prevent \Sn[1] and \Hn[1] from dropping their superscripts.

[mjotex.git] / mjo-topology.tex

diff --git a/mjo-topology.tex b/mjo-topology.tex
index 5f104510b7381c42782728452a77c1097d4bdddc..760d44d96c4bbead22746a24b5712faa16478efa 100644 (file)
--- a/mjo-topology.tex
+++ b/mjo-topology.tex
@@ -1,9 +1,13 @@
 %
 % Standard topological operations.
 %
+\ifx\havemjotopology\undefined
+\def\havemjotopology{1}
 
-% Needed for \operatorname.
-\usepackage{amsopn}
+
+\ifx\operatorname\undefined
+  \usepackage{amsopn}
+\fi
 
 \input{mjo-common}
 
@@ -11,7 +15,10 @@
 \newcommand*{\interior}[1]{ \operatorname{int}\of{{#1}} }
 
 % The ``closure of'' operator.
-\newcommand*{\closure}[1]{ \overline{{#1}} }
+\newcommand*{\closure}[1]{ \operatorname{cl}\of{{#1}} }
 
 % And the ``boundary of'' operator.
 \newcommand*{\boundary}[1]{ \operatorname{bdy}\of{{#1}} }
+
+
+\fi