Inequalities concerning the inverses of positive definite matrices
W. W. Muir · Proceedings of the Edinburgh Mathematical Society · 1974
Much has been written on inequalities concerning positive definite matrices, but a new insight may be gained by examining inequalities from the standpoint of the inverse matrix. The standard inequality of Hölder can then be used in a more fruitful manner. This leads to some new results and a rediscovery of some known results.