mjo-algebra: adopt \directsum and its variants from mjo-common.

diff --git a/mjo-algebra.tex b/mjo-algebra.tex
index fb930279e46e851855845e6e32820e9504ec20a8..c4e70c232ba2ccb8ecbc02a5574052e5cd40a895 100644 (file)
--- 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 f14b60d8a5a3d70563c8e8055a49516a7ea91a5f..38b262ba403c705e5fb0b543ce1b2df997c6970d 100644 (file)
--- 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