ORTHA Orthonormalization Relative to matrix A
computes an orthonormal basis Q for the range of X, relative to the scalar product using a positive definite and selfadjoint matrix A. That is, Q'*A*Q = I, the columns of Q span the same space as columns of X, and rank(Q)=rank(X).
Andrew Knyazev (2021). ortha.m (https://www.mathworks.com/matlabcentral/fileexchange/51-ortha-m), MATLAB Central File Exchange. Retrieved .
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