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 transreal arithmetic denoted by Φ, or similarly in wheel theory denoted by ⊥.
See also
Topics referred to by the same term
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