Generalization of the Hilbert metric to the space of positive definite
 matrices
                         by

       Carlangelo Liverani and  Maciej P. Wojtkowski

ABSTRACT

We introduce a generalization of the Hilbert projective metric 
to the space of positive definite matrices which we view as part of the 
Lagrangian Grassmannian.

PUBLISHED ON

Pacific Journal of Mathematics, 166, N.2, pp. 339-355, (1994).