diff --git a/operators.sty b/operators.sty
index 63070cf..26de8b4 100644
--- a/operators.sty
+++ b/operators.sty
@@ -85,16 +85,19 @@
 \DeclareMathOperator\CHaus{{\textbf{CHaus}}}
 \def\op{^{\textbf{op}}}
 
-% Characteristic function
-\newcommand*{\cfun}{\ensuremath{\mathbbm{1}}}
-\newcommand*{\One}{\ensuremath{\mathbbm{1}}}
-
-
-\DeclareMathOperator\lhs{LHS}
+%Set theory
 \DeclareMathOperator\card{card}
 \DeclareMathOperator\Cd{Cd}
 \DeclareMathOperator\Ord{Ord}
 \DeclareMathOperator\otp{otp}
 \DeclareMathOperator\Card{Card}
 
+% Characteristic function
+\newcommand*{\cfun}{\ensuremath{\mathbbm{1}}}
+\newcommand*{\One}{\ensuremath{\mathbbm{1}}}
+
+
+\DeclareMathOperator\lhs{LHS}
+
+