public static <G extends PartiallyOrdered<?>> Context powerset(final List<G> set) {
        return new Context(set, set, new NotEqual());
    }
public static < G extends PartiallyOrdered < ? > > Context powerset ( final List < G > set ) { return new Context ( set , set , new NotEqual ( ) ) ; }
Calculate the powerset lattice.
@param <G> element type
@param set of partially-ordered elements
@return the powerset lattice