val print : Cudf.universe -> Stdlib.Format.formatter -> PSet.t list -> unit
val of_disj : 'a -> 'a list
val iter : 'a list -> ('a -> unit) -> unit
val fold : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b
val filter : ('a -> bool) -> 'a list -> 'a list
val exists : ('a -> bool) -> 'a list -> bool
val map : ('a -> 'b) -> 'a list -> 'b list