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NumericalAlgebraicGeometry :: numericalRank

numericalRank -- numerical rank of a matrix

Synopsis

Description

Find an approximate rank of the matrix M by finding the first large 'gap' between two consecutive singular values. The gap between sigma_i and sigma_{i+1} is large if sigma_i/sigma_{i+1} > Threshold.
i1 : numericalRank matrix {{2,1},{0,0.001}}

o1 = 1

Caveat

sigma_0=1 is assumed

See also

Ways to use numericalRank :