Nelson Onuchic, Brazilian mathematician (Brodosqui, São Paulo State 12 March 1926 – São Carlos, São Paulo State 03 September 1999)
From Austrian descent
ACHIEVEMENTS
Authored 49 works
Obtained important findings about P spaces and uniform structures that earned him renown in international scientific community (1958-60)
Introduced new concepts in asymptotic equivalence
Generalized the concept of exit point
Extended Waszewski topological method for differential equations with time-delay
Obtained an instability criterion more generalized that from Hale concept (1971)
EPONYMY
Hartman-Onuchic theorem (1963)
Hale-Onuchic asymptotic method (1964)
See (in Portuguese)
http://www.athena.biblioteca.unesp.br/exlibris/bd/brc/33004137031P7/2006/badin_mg_me_rcla.pdf