# Nullity

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> Markdown URL: https://mediated.wiki/source/Nullity.md
> Source: https://en.wikipedia.org/wiki/Nullity
> Source revision: 1346848507
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**Nullity** may refer to:

- [Legal nullity](/source/Legal_nullity), something without legal significance
- [Nullity (conflict)](/source/Nullity_(conflict)), a legal declaration that no marriage had ever come into being

## Mathematics

- [Nullity (linear algebra)](/source/Nullity_(linear_algebra)), the dimension of the kernel of a mathematical operator or null space of a matrix
- [Nullity (graph theory)](/source/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](/source/Matroid)
- Nullity, a concept in [wheel theory](/source/Wheel_theory) denoted by ⊥, or similarly in transreal arithmetic denoted by Φ.

## See also

- [Null](/source/Null_(disambiguation))
- [Nullification](/source/Nullification_(disambiguation))

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Adapted from the Wikipedia article [Nullity](https://en.wikipedia.org/wiki/Nullity) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Nullity?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.