RankRev: a Matlab package for computing the numerical rank and updating/downdating

computing the numerical rank and updating/downdating

This package provides a set of Matlab functions to compute the numerical
rank and numerical subspaces of a matrix along with updating/dowdating
capabilities for making adjustment to the results when a row or column
is inserted/deleted. The package and the underlying algorithms are accurate,
reliable, and much more efficient than the singular value decomposition
when the matrix is of low rank or low nullity.
See the help page of each function for the calling syntax.