def get_absolute_ground_set() -> _structure.Structure:
"""Return the :term:`absolute ground set` of this :term:`algebra`."""
return _structure.PowerSet(_structure.GenesisSetA())
def get_ground_set(self) -> _structure.Structure:
"""Return the :term:`ground set` of the lowest-level algebra of ``self``. Is always
:math:`A`.
"""
return _structure.GenesisSetA()