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[[Category:Linear and multilinear algebra; matrix theory]]
{{MSC|15Axx|}}
{{TEX|done}}

''of a matrix $A$ of dimension $m\times n$''

A matrix of dimension $k\times l$, where $1<k<m$, $1<l<n$, formed by the elements at the intersection of $k$ specified rows and $l$ specified columns of $A$ with retention of the previous order. The determinant of a square submatrix of order $k$ of a matrix $A$ is called a minor of order $k$ of $A$.