(* *)
(**************************************************************************)
-(* GENERAL NOTATION USED BY THE FORMAL SYSTEM λδ ****************************)
+(* GROUND NOTATION **********************************************************)
notation "hvbox( L1 ⋓ break term 46 L2 ≘ break term 46 L )"
- non associative with precedence 45
- for @{ 'RUnion $L1 $L2 $L }.
+ non associative with precedence 45
+ for @{ 'RUnion $L1 $L2 $L }.