 Nonnegative rank (linear algebra) (source code)

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= Nonnegative rank (linear algebra)
{wiki=Nonnegative_rank_(linear_algebra)}

In linear algebra, the nonnegative rank of a matrix is a measure of the smallest number of nonnegative rank-one matrices that can be summed to produce the original matrix. A rank-one matrix can be expressed as the outer product of two vectors.

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