Hello, I hope it is not a too stupid question. I have a singular matrix A (so not invertible). I want to find a nontrivial nonnegative solution to AX=0 (kernel of A) It is a special matrix A (so maybe this nonnegative solution is unique) The authors of the article suggest a Gaussian elimination method Do you know if R can do that automatically ? I have seen that "solve" has an option "LAPACK" but it does not seem to work with me :( Thank you very much _________________________________________________________________ Le blog Messenger de Michel, candidat de la Nouvelle Star : analyse, news, coulisses… A découvrir !
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