Merge pull request #6 from yallop/direct-sum

Fix typos in definition of direct sum.

ib/linalg/01_vector_spaces_and_linear_dependence.tex

@@ -384,7 +384,7 @@ \subsection{Dimensionality of sums}
 \subsection{Direct sums}
 \begin{definition}
 	Let \( V \) be an \( F \)-vector space and \( U, W \) be subspaces of \( V \).
-	We say that \( V = U \oplus V \), read as the direct sum of \( U \) and \( V \), if \( \forall v \in V, \exists!
+	We say that \( V = U \oplus W \), read as the direct sum of \( U \) and \( W \), if \( \forall v \in V, \exists!
 	u \in U, \exists!
 	w \in W, u + w = v \).
 	We say that \( W \) is \textit{a} direct complement of \( U \) in \( V \); there is no uniqueness of such a complement.