module Filtering:sig..end
true when ~polarity:false (for hypotheses)false when ~polarity:true (for goals)filter ~polarity:true f p ==> pp ==> filter ~polarity:false f ptheory/filtering.why for proofs.val filter : polarity:bool -> (Lang.F.pred -> bool) -> Lang.F.pred -> Lang.F.pred
val compute : ?anti:bool -> Conditions.sequent -> Conditions.sequent