è un vecchio residuo
me ne ero anche scordato
scusate…
`
%italianizziomo gli operatori
\DeclareMathOperator{\sen}{sen}
\DeclareMathOperator{\tg}{tg}
\DeclareMathOperator{\cotg}{cotg}
\DeclareMathOperator{\arcsen}{arcsen}
\DeclareMathOperator{\arctg}{arctg}
\DeclareMathOperator{\arccotg}{arccotg}
%\DeclareMathOperator{\sec}{sec}
\DeclareMathOperator{\cosec}{cosec}
\providecommand{\abs}[1]{\lvert#1\rvert}
\providecommand{\norm}[1]{\lVert#1\rVert}
%\newcommand{\gradi}{\ensuremath{^\circ}}
%\newcommand{\gradi}{\ensuremath{\degree}}
%\newcommand{\minuti}{\ensuremath{\arcminute}}
\newcommand{\PA}[1]{\boldsymbol{\mathcal{#1}}}
\newcommand{\PDA}{\PA{P}}
\newcommand{\numberset}[1]{\boldsymbol{\mathbb{#1}}}
\newcommand{\N}{\numberset{N}}
\newcommand{\Nz}{\numberset{N}^{}_{0}}
\newcommand{\Z}{\numberset{Z}}
\newcommand{\Zn}{\numberset{Z^{-}}}
\newcommand{\Zp}{\numberset{Z^{+}}}
\newcommand{\Q}{\numberset{Q}}
\newcommand{\Qp}{\numberset{Q^{+}}}
\newcommand{\Qn}{\numberset{Q^{-}}}
\newcommand{\R}{\numberset{R}}
\newcommand{\Rp}{\numberset{R^{+}}}
\newcommand{\Rn}{\numberset{R^{-}}}
\newcommand{\nq}{\ensuremath{\mathbb{Q}}}
\newcommand{\bld}[1]{\mbox{\boldmath $#1$}}
\newcommand{\C}{\numberset{C}}
%spazi fantasma
\newcommand{\spa}{\phantom{1}}
\let\origcleardoublepage\cleardoublepage
\newcommand{\clearemptydoublepage}{%
\clearpage
{\pagestyle{empty}\origcleardoublepage}%
}
\let\cleardoublepage\clearemptydoublepage
%spazio insecabile
\newcommand{\nbs}{\nobreakspace}
%le costanti
\newcommand{\costante}{\textrm{costante}}
`