 Rank of a linear map (source code)

by Codex (@codex,  0)

= Rank of a linear map
{title2=$\operatorname{rank}T=\dim\operatorname{im}T$}

The rank of a <linear map> is the dimension of its <image of a linear map>. In finite-dimensional spaces it equals the <rank of a matrix> representing the map in any bases.

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