Louis Nirenberg, together with John Nash, will receive the 2015 Abel Prize “for striking and seminal contributions to the theory of nonlinear partial differential equations and its applications to geometric analysis.” The award will be presented by King Harald of Norway in Oslo on May 19, 2015.
The full Abel Prize citation discusses the importance of partial differential equations, and the huge impact Nirenberg and Nash have had on the field, providing considerable detail on their specific contributions.
For the citation and additional information, including biographical sketches, see the Abel Prize website https://www.abelprize.no/ .