Fix examples

src/2025-11-07/presentation.tex

@@ -137,7 +137,7 @@
                     \begin{align*}
                         \Omega &= \mleft\{(i,j): i,j \in \mleft\{
                         1,\ldots, 6 \mright\}\mright\} \\
-                        A &= \mleft\{ (1,1),(2,2), \ldots, (6,6) \mright\}
+                        A &= \mleft\{ (1,1),(1,2), \ldots, (6,6) \mright\}
                     \end{align*}
                     \vspace*{-12mm}
                 \end{lightgrayhighlightbox}
@@ -372,7 +372,7 @@
                 \begin{lightgrayhighlightbox}
                     Beispiel:
                     \begin{gather*}
-                        \Omega = {A, B, C}\\
+                        \Omega = \{A, B, C\}\\
                         \Pi_N = \{ (A,B,C), (A,C,B), (B,A,C),\\
                         (B,C,A), (C,A,B), (C,B,A)\}
                     \end{gather*}