Obituaries: Cathleen Morawetz (1923-2017) — In the mathematics of flows and shocks, Cathleen Morawetz, Olga Ladyzhenskaya, and Olga Oleinik together form a singular legacy, an interconnected legacy (Early Memories of
Obituaries: Herbert Scarf (1930 - 2015) — In addition to inventory policy, Scarf had at least four more major breakthroughs. Perhaps his most famous discovery is the Scarf algorithm. Arrow and Debreu