Cathleen Synge Morawetz, Canadian mathematician (died 2017)

Cathleen Synge Morawetz 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 president of the American Mathematical Society from 1995 to 1996. She was awarded the National Medal of Science in 1998.

May 5 is the 125th day of the year in the Gregorian calendar; 240 days remain until the end of the year.