module PPreserving: T_Preserving
T_Preserving
val set : Subst.subst -> Subst.var -> Subst.term -> Subst.subst
Subst.subst -> Subst.var -> Subst.term -> Subst.subst
val set' : Subst.subst -> Var.var -> int -> Term.term -> int -> Subst.subst
Subst.subst -> Var.var -> int -> Term.term -> int -> Subst.subst