deletions | additions       diff --git a/header.tex b/header.tex  index 3c75254..b662890 100644  --- a/header.tex  +++ b/header.tex 
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\newcommand{\wthco}{$W(\mthco)$}  \newcommand{\nthco}{$N(\mthco)$}  \newcommand{\myemail}{[email protected]}  \def \simless {\mathbin{\lower \newcomman{\simless}{\mathbin{\lower  3pt\hbox{$\rlap{\raise 6pt \hbox{$\char'074$}}\mathchar"7218$}}} \def \simgreat {\mathbin{\lower \newcommand{\simgreat}{\mathbin{\lower  3pt\hbox{$\rlap{\raise 6pt \hbox{$\char'076$}}\mathchar"7218$}}}