chore: remove invisible ~

latex/content.tex

@@ -166,9 +166,9 @@ mean = mean(values)
 variance = variance(values)
 \end{lstlisting}
 
-Execution time : $ ~ 4.8 $ seconds
+Execution time : $ 4.8 $ seconds
 
-Memory usage : $ ~ 32 $ MB
+Memory usage : $ 32 $ MB
 
 \paragraph{Improved algorithm} Continuous calculation
 
@@ -184,9 +184,9 @@ mean = Tot / N
 variance = Tot2 / (N-1) - mean**2
 \end{lstlisting}
 
-Execution time : $ ~ 530 $ milliseconds
+Execution time : $ 530 $ milliseconds
 
-Memory usage : $ ~ 1.3 $ kB
+Memory usage : $ 1.3 $ kB
 
 \paragraph{Analysis} Memory usage is, as expected, much lower when calculating
 the statistics on the fly. Furthermore, something we hadn't anticipated is the