Clarified that eigenvalue integral relies on symmetry of matrix.

1 files changed, 1 insertions, 1 deletions

diff --git a/marginal.tex b/marginal.tex
index 8efa79f..ddd31da 100644
--- a/marginal.tex
+++ b/marginal.tex
@@ -141,7 +141,7 @@ at the bottom on the spectrum.
 
 \subsection{The general method}
 
-Consider an $N\times N$ real matrix $A$. An arbitrary function $g$ of the
+Consider an $N\times N$ real symmetric matrix $A$. An arbitrary function $g$ of the
 minimum eigenvalue of $A$ can be expressed using integrals over $\mathbf
 s\in\mathbb R^N$ as
 \begin{equation} \label{eq:λmin}