Nullity

Nullity may refer to:

Legal nullity, something without legal significance Nullity (conflict), a legal declaration that no marriage had ever come into being

Mathematics Nullity (linear algebra), the dimension of the kernel of a mathematical operator or null space of a matrix Nullity (graph theory), the nullity of the adjacency matrix of a graph Nullity, the difference between the size and rank of a subset in a matroid Nullity, a concept in wheel theory denoted by ⊥, or similarly in transreal arithmetic denoted by Φ.

See also Null Nullification