diff --git a/Advanced/Introduction to Quantum/parts/00 vectors.tex b/Advanced/Introduction to Quantum/parts/00 vectors.tex
index 71f6708..3d4b6f3 100644
--- a/Advanced/Introduction to Quantum/parts/00 vectors.tex	
+++ b/Advanced/Introduction to Quantum/parts/00 vectors.tex	
@@ -8,9 +8,9 @@ For example, $\left[\begin{smallmatrix} 1 \\ 3 \\ 2 \end{smallmatrix}\right]$ is
 \definition{Euclidean norm}
 The length of an $n$-dimensional vector $v$ is computed as follows:
 \begin{equation*}
-	|v| = \sqrt{v_0^2 +v_1^2 + ... + v_n^2}
+	|v| = \sqrt{v_1^2 + ... + v_n^2}
 \end{equation*}
-Where $v_0$ through $v_n$ represent individual components of this vector. For example,
+Where $v_1$ through $v_n$ represent individual components of this vector. For example,
 \begin{equation*}
 	\left|\left[\begin{smallmatrix} 1 \\ 3 \\ 2 \end{smallmatrix}\right]\right| = \sqrt{1^2 + 3^2 + 2^2} = \sqrt{14}
 \end{equation*}