notation "hvbox(a break ∉ b)" non associative with precedence 45
for @{ 'notmem $a $b }.
-notation "hvbox(a break ≬ b)" non associative with precedence 45
-for @{ 'overlaps $a $b }. (* \between *)
-
-notation "hvbox(a break ⊆ b)" non associative with precedence 45
-for @{ 'subseteq $a $b }. (* \subseteq *)
-
notation "hvbox(a break ∩ b)" left associative with precedence 60
for @{ 'intersects $a $b }. (* \cap *)
(*
notation < "s \sup (-1) x" non associative with precedence 90 for @{ 'invert_appl $s $x}.
-notation "| term 19 C |" with precedence 70 for @{ 'card $C }.
-
notation "\naturals" non associative with precedence 90 for @{'N}.
notation "\rationals" non associative with precedence 90 for @{'Q}.
notation "\reals" non associative with precedence 90 for @{'R}.