From 66a672c6c1657ad96422fcdb4828bc5d9a108ab0 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Thu, 4 Jun 2020 09:19:00 -0400
Subject: [PATCH] mjo-linear_algebra.tex: update a comment before abusing
 notation.

I'm about to use \Hn to denote the Hermitian matrices over a general,
specified field. So first let's document that.
---
 mjo-linear_algebra.tex | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mjo-linear_algebra.tex b/mjo-linear_algebra.tex
index c57e9b9..a534523 100644
--- a/mjo-linear_algebra.tex
+++ b/mjo-linear_algebra.tex
@@ -151,7 +151,9 @@
 
 % The space of complex Hermitian n-by-n matrices. Does not reduce to
 % merely "H" when n=1 since H^{n} does not mean an n-fold cartesian
-% product of H^{1}.
+% product of H^{1}. The field may also be given rather than assumed
+% to be complex; for example \Hn[3]\of{\mathbb{O}} might denote the
+% 3-by-3 Hermitian matrices with octonion entries.
 \newcommand*{\Hn}[1][n]{ \mathcal{H}^{#1} }
 \ifdefined\newglossaryentry
   \newglossaryentry{Hn}{
-- 
2.43.2