Louis Nirenberg

Louis Nirenberg was a Canadian-American mathematician, considered one of the most outstanding mathematicians of the twentieth century. Nearly all of his work was in the field of partial differential equations, and he is regarded as a foundational figure in geometric analysis, with works closely related to complex analysis and differential geometry. He entered graduate school at the Courant Institute of Mathematical Sciences at New York University, became a professor there and remained at the Courant Institute for the rest of his career. He advised 45 PhD students and published over 150 papers with many coauthors.