Add \cartprodthree command to avoid nesting \cartprod.

[mjotex.git] / mjo-common.tex

diff --git a/mjo-common.tex b/mjo-common.tex
index a4457883acbea4f39adfa6e90e63684533e37eed..26e761bda919ae79d587a16e8b435f49cd019694 100644 (file)
--- a/mjo-common.tex
+++ b/mjo-common.tex
@@ -23,6 +23,12 @@
 % A pair of things.
 \providecommand*{\pair}[2]{ \left( {#1}, {#2} \right) }
 
+% The Cartesian product of two things.
+\providecommand*{\cartprod}[2]{ {#1} \times {#2} }
+
+% The Cartesian product of three things.
+\providecommand*{\cartprodthree}[3]{ \cartprod{{#1}}{\cartprod{{#2}}{{#3}}} }
+
 %
 % Product spaces
 %