Add \Zn, \Qn, \Rn, and \Cn macros for the standard product spaces.

diff --git a/mjo-common.tex b/mjo-common.tex
index c2f9dd786da6f3a7d4c4e9b30f4af75693117978..88bdc1d65b4a3f8f5962c697f075c0268f1735df 100644 (file)
--- a/mjo-common.tex
+++ b/mjo-common.tex
@@ -22,3 +22,15 @@
 
 % A pair of things.
 \providecommand*{\pair}[2]{ \left( {#1}, {#2} \right) }
+
+% The integral n-space, Z x Z x Z x ... x Z.
+\providecommand*{\Zn}[1][n]{ \mathbb{Z}^{{#1}} }
+
+% The rational n-space, Q x Q x Q x ... x Q.
+\providecommand*{\Qn}[1][n]{ \mathbb{Q}^{{#1}} }
+
+% The real n-space, R x R x R x ... x R.
+\providecommand*{\Rn}[1][n]{ \mathbb{R}^{{#1}} }
+
+% The complex n-space, C x C x C x ... x C.
+\providecommand*{\Cn}[1][n]{ \mathbb{C}^{{#1}} }

diff --git a/mjo-cone.tex b/mjo-cone.tex
index 1199d4f55be54130d2660f7814f9f857d8590853..443d7009af0a757b2897341259da2134f360fb90 100644 (file)
--- a/mjo-cone.tex
+++ b/mjo-cone.tex
@@ -14,7 +14,7 @@
 %
 
 % The nonnegative orthant in the given number of dimensions.
-\newcommand*{\Rnplus}[1][n]{ \mathbb{R}^{{#1}}_{+} }
+\newcommand*{\Rnplus}[1][n]{ \Rn[#1]_{+} }
 
 % The Lorentz ``ice-cream'' cone in the given number of dimensions.
 \newcommand*{\Lnplus}[1][n]{ \mathcal{L}^{{#1}}_{+} }