Variation of the unitary part of a matrix

Bhatia, RajendraMukherjee, K K2012-06-132012-06-131994SIAM journal on matrix algebra and applications,V15,P1007-1014http://hdl.handle.net/10263/4345enPolar decompositionQR decompositionPerubation manifoldSingular valueVariation of the unitary part of a matrixArticle