Simplify

thesis.tex

@@ -427,8 +427,8 @@ written $\dec{Im}(f)$, is the set of values that it can return, i.e.
     \item Injective: $\forall a,a' \in A$ if $f(a) = f(a')$ then $a = a'$.
     \item Surjective: $\forall b \in B,\exists a \in A$ such that $f(a) = b$.
   \end{itemize}
-  If a function $f$ is both injective and surjective, then it is said
-  to be a bijective.
+  If a function is both injective and surjective, then it is said to
+  be a bijective.
 \end{definition}
 %
 An injective function guarantees that each element in its image is