Cathleen Morawetz

https://www.nytimes.com/2017/08/11/science/cathleen-morawetz-dead-n... https://en.wikipedia.org/wiki/Cathleen_Synge_Morawetz

Cathleen Synge Morawetz (May 5, 1923 – August 8, 2017) was a Canadian mathematician who spent much of her career in the United States. Morawetz's research was mainly in the study of the partial differential equations governing fluid flow, particularly those of mixed type occurring in transonic flow. She was professor emerita at the Courant Institute of Mathematical Sciences at the New York University, where she had also served as director from 1984 to 1988. She was awarded the National Medal of Science in 1998.