Explications sur les règles de typage de booléens

dm.tex

@@ -222,7 +222,7 @@ Condition
   \inference{\Gamma \vdash b & \Gamma \vdash S_1 & \Gamma \vdash S_2}{\Gamma \vdash \<if>\ b\ \<then>\ S_1\ \<else>\ S_2}
 \]
 
-Booleans
+As the booleans expressions can contain expressions which can contain variables, they are not necessarily well typed. Hence we need to define typing rules on booleans:
 \[
   \inference{}{\Gamma \vdash \<true>}
 \]