Rank and codimension: Difference between revisions

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m prefer nullspace to null-space
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All three of rank, nullity, and dimensionality are types of dimension:
All three of rank, nullity, and dimensionality are types of dimension:
* Rank is the dimension of the [[image]] (or range).  
* Rank is the dimension of the [[image]] (or range).  
* Nullity is the dimension of the [[null-space]] (or kernel).
* Nullity is the dimension of the [[nullspace]] (or kernel).
* Dimensionality is the dimension of the (sub)group (or domain). It is a bit confusing that, unlike the other two, "dimensionality" actually contains the word "dimension".
* Dimensionality is the dimension of the (sub)group (or domain). It is a bit confusing that, unlike the other two, "dimensionality" actually contains the word "dimension".