Stop adding papers

Signed-off-by: Riccardo Finotello <riccardo.finotello@gmail.com>

sciencestuff.sty

@@ -64,6 +64,7 @@
 \providecommand{\mse}{\textsc{mse}\xspace}
 \providecommand{\mae}{\textsc{mae}\xspace}
 \providecommand{\ann}{\textsc{ann}\xspace}
+\providecommand{\nn}{\textsc{nn}\xspace}
 \providecommand{\cnn}{\textsc{cnn}\xspace}
 \providecommand{\ap}{\ensuremath{\alpha'}\xspace}
 \providecommand{\sgn}{\ensuremath{\mathrm{sign}}}
@@ -1396,6 +1397,10 @@
 \providecommand{\uffY}{\ensuremath{\underline{\mathfrak{Y}}}\xspace}
 \providecommand{\uffZ}{\ensuremath{\underline{\mathfrak{Z}}}\xspace}
 
+%---- functions
+
+\providecommand{\fid}{\mathrm{id}}
+
 %---- groups
 
 \providecommand{\OO}[1]{\ensuremath{\mathrm{O}(#1)}\xspace}