@article {15803, title = {Scaling symmetric positive definite matrices to prescribed row sums}, journal = {Linear Algebra and its Applications}, volume = {370}, year = {2003}, month = {2003/09/01/}, pages = {185 - 191}, abstract = {We give a constructive proof of a theorem of Marshall and Olkin that any real symmetric positive definite matrix can be symmetrically scaled by a positive diagonal matrix to have arbitrary positive row sums. We give a slight extension of the result, showing that given a sign pattern, there is a unique diagonal scaling with that sign pattern, and we give upper and lower bounds on the entries of the scaling matrix.}, keywords = {Diagonal preconditioning, Homotopy, Matrix scaling, Positive definite matrices}, isbn = {0024-3795}, doi = {10.1016/S0024-3795(03)00387-2}, url = {http://www.sciencedirect.com/science/article/pii/S0024379503003872}, author = {O{\textquoteright}Leary,Dianne P.} }