diff --git a/inputs/lecture_10.tex b/inputs/lecture_10.tex
index 32d17d0..80aa817 100644
--- a/inputs/lecture_10.tex
+++ b/inputs/lecture_10.tex
@@ -27,10 +27,10 @@ where $\mu = \bP X^{-1}$.
 
     We have
     \begin{IEEEeqnarray*}{rCl}
-        &&\lim_{T \to  \infty} \frac{1}{2 \pi} \int_{-T}^T \int_{\R} \frac{e^{-\i t b}- e^{-\i t a}}{-\i t} e^{\i t x} d  \bP(x)\\
-        &\overset{\text{Fubini for  $L^1$}}{=}& \lim_{T \to  \infty} \frac{1}{2 \pi} \int_{\R} \int_{-T}^T \frac{e^{-\i t b}- e^{-\i t a}}{-\i t} e^{\i t x} d  \bP(x)\\
-        &=& \lim_{T \to  \infty} \frac{1}{2 \pi} \int_{\R} \int_{-T}^T \frac{e^{\i t (b-x)}- e^{\i t (x-a)}}{-\i t} d  \bP(x)\\
-        &=& \lim_{T \to \infty} \frac{1}{2 \pi} \int_{\R} \underbrace{\int_{-T}^T \left[ \frac{\cos(t (x-b)) - \cos(t(x-a))}{-\i t}\right] d \bP(x)}_{=0 \text{, as the function is odd}}
+        &&\lim_{T \to  \infty} \frac{1}{2 \pi} \int_{-T}^T \int_{\R} \frac{e^{-\i t b}- e^{-\i t a}}{-\i t} e^{\i t x} dt d  \bP(x)\\
+        &\overset{\text{Fubini for  $L^1$}}{=}& \lim_{T \to  \infty} \frac{1}{2 \pi} \int_{\R} \int_{-T}^T \frac{e^{-\i t b}- e^{-\i t a}}{-\i t} e^{\i t x} dt d  \bP(x)\\
+        &=& \lim_{T \to  \infty} \frac{1}{2 \pi} \int_{\R} \int_{-T}^T \frac{e^{\i t (b-x)}- e^{\i t (x-a)}}{-\i t} dt d  \bP(x)\\
+        &=& \lim_{T \to \infty} \frac{1}{2 \pi} \int_{\R} \underbrace{\int_{-T}^T \left[ \frac{\cos(t (x-b)) - \cos(t(x-a))}{-\i t}\right] dt d \bP(x)}_{=0 \text{, as the function is odd}}
       \\&&
         + \lim_{T \to \infty} \frac{1}{2\pi} \int_{\R}\int_{-T}^T \frac{\sin(t ( x - b)) - \sin(t(x-a))}{-t} dt d\bP(x)\\
         &=& \lim_{T \to \infty} \frac{1}{\pi} \int_\R \int_{0}^T \frac{\sin(t(x-a)) - \sin(t(x-b))}{t} dt d\bP(x)\\
diff --git a/wtheo.sty b/wtheo.sty
index a494021..728d857 100644
--- a/wtheo.sty
+++ b/wtheo.sty
@@ -93,6 +93,7 @@
 
 \NewFancyTheorem[thmtools = { style = thmredmargin} , group = { big } ]{warning}
 \DeclareSimpleMathOperator{Var}
-\DeclareSimpleMathOperator{Exp}
+
 \DeclareSimpleMathOperator{Bin}
 \DeclareSimpleMathOperator{Ber}
+\DeclareSimpleMathOperator{Exp}