Re: Given a matrix A, construct a semi-orthogonal matrix L

*To*: mathgroup at smc.vnet.net*Subject*: [mg83377] Re: Given a matrix A, construct a semi-orthogonal matrix L*From*: Szabolcs Horvát <szhorvat at gmail.com>*Date*: Sun, 18 Nov 2007 04:58:25 -0500 (EST)*References*: <fhmh6q$abc$1@smc.vnet.net>

Tebi wrote: > Given a matrix A with (m, n) dimension and m<n, I want to construct a > semi-orthogonal matrix L with dimension (n, n-m) [that is, L'L = I, > where I denotes an identity matrix with dimension (n-m)] such that AL > = 0. Try Orthogonalize@NullSpace[mat] -- Szabolcs