(* NOTATION FOR THE FORMAL SYSTEM α *****************************************)
-notation "hvbox( - 𝛑 term 55 T1 . break term 55 T2 )"
+notation "hvbox( -𝛑 term 55 T1. break term 55 T2 )"
non associative with precedence 55
for @{ 'SnProjNeg $T1 $T2 }.