--- a/pnas/preamble.tex	Sun Nov 14 16:02:06 2010 -0800
+++ b/pnas/preamble.tex	Sun Nov 14 16:13:12 2010 -0800
@@ -99,8 +99,8 @@
 \applytolist{bbc}QWERTYUIOPLKJHGFDSAZXCVBNM;
 
 % \def\bA{{\mathbf A}} for A..Z
-\def\bc#1{\expandafter\def\csname b#1\endcsname{{\mathbf #1}}}
-\applytolist{bc}QWERTYUIOPLKJHGFDSAZXCVBNM;
+\def\bfc#1{\expandafter\def\csname bf#1\endcsname{{\mathbf #1}}}
+\applytolist{bfc}QWERTYUIOPLKJHGFDSAZXCVBNM;
 
 % \DeclareMathOperator{\pr}{pr} etc.
 \def\declaremathop#1{\expandafter\DeclareMathOperator\csname #1\endcsname{#1}}