(* NOTATION FOR THE FORMAL SYSTEM λδ ****************************************)
-notation "hvbox( L1 ⩬ break [ term 46 l , break term 46 m ] break term 46 L2 )"
+notation "hvbox( L1 ⩬ break [ term 46 f , break term 46 m ] break term 46 L2 )"
non associative with precedence 45
- for @{ 'MidIso $l $m $L1 $L2 }.
+ for @{ 'MidIso $f $k $L1 $L2 }.