Typos to fix in version dated 8 Jan 2012



Page 4 first displayed equation of Lemma 3
z_1\}$is         missing a space before the is

Page 7 twice (and perhaps elsewhere)
Spelling error in displayed equations of Lemma 5


indpendent

Greg says
"run ispell -t" over it, which I should be able to do on MacOSX.