The nullity of a linear transformation of vector
spaces is the dimension of its null
space. The nullity and the map rank add up to the
dimension of , a result sometimes known as the rank-nullity
theorem.

The circuit rank of a graph is sometimes also called
its nullity.

## See also

Kernel,

Map Rank,

Null Space,

Rank-Nullity
Theorem
*This entry contributed by Margherita
Barile*

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## Cite this as:

Barile, Margherita. "Nullity." From *MathWorld*--A Wolfram Web Resource, created by Eric
W. Weisstein. https://mathworld.wolfram.com/Nullity.html

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