diff -r 9faf1f7fad3e -r 32a76e8886d1 text/ncat.tex --- a/text/ncat.tex Sun Mar 28 01:40:58 2010 +0000 +++ b/text/ncat.tex Mon Mar 29 05:41:28 2010 +0000 @@ -557,7 +557,7 @@ For a $k$-ball or $k$-sphere $X$, $k