Some modifications and presentation outline

Signed-off-by: Riccardo Finotello <riccardo.finotello@gmail.com>

thesis.tex

@@ -447,7 +447,7 @@
           \quad
           \Rightarrow
           \quad
-          \highlight{\mathrm{U}(N)}
+          \highlight{$\mathrm{U}(N)$}
         \end{equation*}
       \end{column}
       \hfill
@@ -1164,7 +1164,7 @@
     \pause
 
     \begin{block}{Divergences}
-      Even in simple models (e.g.\ NBO, more on this later) the $4$ tachyons amplitude is divergent \textbf{at tree level}:
+      Even in simple models (e.g.\ NBO, more on this later) the $4$ tachyons amplitude is divergent \textbf{in the open sector at tree level}:
       \begin{equation*}
         A_4 \sim \int\limits_{q \sim \infty} \frac{\dd{q}}{\abs{q}} \mathscr{A}( q )
       \end{equation*}
@@ -1358,7 +1358,7 @@
 
       \item \textbf{non compact} orbifold directions $\Rightarrow$ interpretation of \textbf{amplitudes as distributions}
 
-      \item issue not restricted to NBO/GNBO but also BO, null brane, etc. (it is a \textbf{general issues} connected to the geometry of the underlying space)
+      \item issue not restricted to NBO/GNBO but also BO, null brane, etc. (it is a \textbf{general issue} connected to the geometry of the underlying space)
     \end{itemize}
     \vfill
 
@@ -1428,7 +1428,7 @@
       \begin{tabular}{@{}lccc@{}}
         $\mathscr{R}\colon$
         &
-        $\mathds{Z}^{m \times k}$
+        $\mathds{N}^{m \times k}$
         &
         $\longrightarrow$
         &
@@ -1711,13 +1711,13 @@
         \only<2->{\includegraphics[width=\columnwidth]{img/cicy_best_plots.pdf}}
       \end{column}
       \hfill
-      \visible<2->{
-        \begin{column}{0.5\linewidth}
-          \centering
+      \begin{column}{0.5\linewidth}
+        \centering
+        \only<2->{
           \includegraphics[width=0.75\columnwidth]{img/inc_nn_learning_curve_h11.pdf}
           \includegraphics[width=0.75\columnwidth]{img/inc_nn_learning_curve.pdf}
-        \end{column}
-      }
+        }
+      \end{column}
     \end{columns}
   \end{frame}