Yuri BOZHKOV
Departamento de Matematica Aplicada - DMA,
Instituto de Matematica,
Estatistica e Computacao Cientifica -IMECC,
Universidade Estadual de Campinas - UNICAMP,
C.P. 6065,
13083-970 Campinas - SP,
BRAZIL
E-mail: bozhkov@ime.unicamp.br

Noether Symmetries and Critical Exponents

Abstract:
We show that all Lie point symmetries of various classes of nonlinear differential equations involving critical nonlinearities are variational/divergence symmetries.