feat(geometria): aggiunge la proiezione e l'inversione ortogonale

tex/latex/style/personal_commands.sty

@@ -110,7 +110,9 @@
 \newcommand{\bigzero}{\mbox{0}}
 \newcommand{\rvline}{\hspace*{-\arraycolsep}\vline\hspace*{-\arraycolsep}}
 
-\newcommand{\Idv}{Id_V}
+\newcommand{\Idv}{\operatorname{Id}_V}
+\newcommand{\Idw}{\operatorname{Id}_W}
+\newcommand{\IdV}[1]{\operatorname{Id}_{#1}}
 \DeclareMathOperator{\CI}{CI}
 \DeclareMathOperator{\Bil}{Bil}
 \DeclareMathOperator{\Mult}{Mult}
@@ -118,6 +120,10 @@
 \DeclareMathOperator{\Ann}{Ann}
 \DeclareMathOperator{\adj}{adj}
 \DeclareMathOperator{\Cof}{Cof}
+\DeclareMathOperator{\pr}{pr}
+\DeclareMathOperator{\Sp}{sp}
+
+\newcommand{\dperp}{{\perp\perp}}
 
 \newcommand{\Eigsp}[0]{V_{\lambda}}
 \newcommand{\Gensp}[0]{\widetilde{V_{\lambda}}}