From 914fa9f2b50edcf92abfc98c1341e4c9cd6685f5 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Mon, 4 Nov 2019 09:57:09 -0500
Subject: [PATCH] mjo-algebra: adopt \directsum and its variants from
 mjo-common.

---
 mjo-algebra.tex | 12 +++++++++++-
 mjo-common.tex  |  9 ---------
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/mjo-algebra.tex b/mjo-algebra.tex
index fb93027..c4e70c2 100644
--- a/mjo-algebra.tex
+++ b/mjo-algebra.tex
@@ -9,7 +9,17 @@
   \usepackage{amsopn}
 \fi
 
-\input{mjo-common} % for \of, at least
+\input{mjo-common} % for \of, and \binopmany
+
+
+% The direct sum of two things.
+\newcommand*{\directsum}[2]{ {#1}\oplus{#2} }
+
+% The direct sum of three things.
+\newcommand*{\directsumthree}[3]{ \directsum{#1}{\directsum{#2}{#3}} }
+
+% The (indexed) direct sum of many things.
+\newcommand*{\directsummany}[3]{ \binopmany{\bigoplus}{#1}{#2}{#3} }
 
 
 % The (sub)algebra generated by its argument, a subset of some ambient
diff --git a/mjo-common.tex b/mjo-common.tex
index f14b60d..38b262b 100644
--- a/mjo-common.tex
+++ b/mjo-common.tex
@@ -35,12 +35,6 @@
 % A seven-tuple of things.
 \newcommand*{\septuple}[7]{ \left({#1},{#2},{#3},{#4},{#5},{#6},{#7}\right) }
 
-% The direct sum of two things.
-\newcommand*{\directsum}[2]{ {#1}\oplus{#2} }
-
-% The direct sum of three things.
-\newcommand*{\directsumthree}[3]{ \directsum{#1}{\directsum{#2}{#3}} }
-
 % The factorial operator.
 \newcommand*{\factorial}[1]{ {#1}! }
 
@@ -134,9 +128,6 @@
 }
 
 
-\newcommand*{\directsummany}[3]{ \binopmany{\bigoplus}{#1}{#2}{#3} }
-
-
 % The four standard (UNLESS YOU'RE FRENCH) types of intervals along
 % the real line.
 \newcommand*{\intervaloo}[2]{ \left({#1},{#2}\right) } % open-open
-- 
2.43.2