From cabf89f8e9b033a0a0d0e875886928f227798413 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 7 Mar 2017 18:52:39 -0500
Subject: [PATCH] Add S^{n}, the space of symmetric n-by-n matrices.

---
 mjo-common.tex | 4 ++++
 mjo-cone.tex   | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/mjo-common.tex b/mjo-common.tex
index 61ea7c4..1e3c69f 100644
--- a/mjo-common.tex
+++ b/mjo-common.tex
@@ -78,6 +78,10 @@
   \mathbb{C}\if\detokenize{#1}\detokenize{1}{}\else^{#1}\fi
 }
 
+% The space of symmetric n-by-n matrices.
+\providecommand*{\Sn}[1][n]{
+  \mathcal{S}\if\detokenize{#1}\detokenize{1}{}\else^{#1}\fi
+}
 
 %
 % Basic set operations
diff --git a/mjo-cone.tex b/mjo-cone.tex
index b770d75..b7bcdab 100644
--- a/mjo-cone.tex
+++ b/mjo-cone.tex
@@ -24,7 +24,7 @@
 \newcommand*{\Lnplus}[1][n]{ \mathcal{L}^{{#1}}_{+} }
 
 % The PSD cone in a space of symmetric matrices.
-\newcommand*{\Snplus}[1][n]{ \mathcal{S}^{{#1}}_{+} }
+\newcommand*{\Snplus}[1][n]{ \Sn[#1]_{+} }
 
 % The PSD cone in a space of Hermitian matrices.
 \newcommand*{\Hnplus}[1][n]{ \mathcal{H}^{{#1}}_{+} }
-- 
2.44.2