- (∈) :: Int -> IntSet -> Bool
- (∉) :: Int -> IntSet -> Bool
- (∅) :: IntSet
- (∪) :: IntSet -> IntSet -> IntSet
- (∩) :: IntSet -> IntSet -> IntSet
- (⊆) :: IntSet -> IntSet -> Bool
- (⊇) :: IntSet -> IntSet -> Bool
- (⊈) :: IntSet -> IntSet -> Bool
- (⊉) :: IntSet -> IntSet -> Bool
- (⊂) :: IntSet -> IntSet -> Bool
- (⊃) :: IntSet -> IntSet -> Bool
- (⊄) :: IntSet -> IntSet -> Bool
- (⊅) :: IntSet -> IntSet -> Bool