diff -r ae5a542c958e -r fd5d1647f4f3 text/kw_macros.tex
--- a/text/kw_macros.tex	Fri May 07 11:18:39 2010 -0700
+++ b/text/kw_macros.tex	Sun May 09 22:32:37 2010 -0700
@@ -9,6 +9,8 @@
 \def\t{\mathbb{T}}
 \def\ebb{\mathbb{E}}
 
+\def\k{{\bf k}}
+
 \def\du{\sqcup}
 \def\bd{\partial}
 \def\sub{\subset}