Carla Tardi is a technical editor and digital content producer with 25+ years of experience at top-tier investment banks and money-management firms. Robert Kelly is managing director of XTS Energy LLC ...

Kohlberg, Elon, and John W. Pratt. "The Contraction Mapping Approach to the Perron-Frobenius Theory: Why Hilbert's Metric?" Mathematics of Operations Research, no. 7 (1982): 198–210.