X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-topology.tex;h=885f3390ae0aee177391ac1584070704261ca962;hp=2a7f3b7649efbf74d33db13355b55456e38ca291;hb=eaa1f615a11b7010088cb848ce909c47beb3fb4d;hpb=12d889222927639e9320ef4d572ca87b8a87e41e

diff --git a/mjo-topology.tex b/mjo-topology.tex
index 2a7f3b7..885f339 100644
--- a/mjo-topology.tex
+++ b/mjo-topology.tex
@@ -2,13 +2,16 @@
 % Standard topological operations.
 %
 
+% Needed for \operatorname.
+\usepackage{amsopn}
+
 \input{mjo-common}
 
 % The ``interior of'' operator.
-\newcommand*{\interior}[1]{ \operatorname{int} \of{{#1}} }
+\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 operator.
-\newcommand*{\boundary}[1]{ \partial \of{{#1}} }
+% And the ``boundary of'' operator.
+\newcommand*{\boundary}[1]{ \operatorname{bdy}\of{{#1}} }