{"version":"1.0","type":"link","title":"Nullary relation - Newikis","description":"In mathematics, a nullary relation, 0-ary relation, or relation of degree zero is a relation with zero attributes. There are exactly two relations of degree zero. One has cardinality zero; that is, contains no tuples at all. The other has cardinality 1 and contains only the unique 0-tuple.:56","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}