Welington de Melo

Welington Celso de Melo (17 November 1946 – 21 December 2016) was a Brazilian mathematician. Known for his contributions to the dynamical systems theory, he was a full professor at Instituto Nacional de Matemática Pura e Aplicada from 1980 to 2016. Melo had written numerous papers, one being a complete description of the topological behavior of 1-dimensional real dynamical systems (co-authored with Marco Martens and Sebastian van Strien). He proved the global hyperbolicity of renormalization for Cr unimodal maps hyperbolicidade (co-authored with Alberto Pinto and Edson de Faria).
He was a recipient of the 2003 TWAS Prize.