PageHeader : Funkcialaj Ekvacioj, 37 (1994) 461-482 Title : Uniqueness of Positive and Nonnegative Title : Solutions of Nonlinear Equations AuthorInfo : By AuthorInfo : Robert DALMASSO AuthorInfo : (Laboratoire LMC-IMAG, France) section : 1. Introduction section : 2. Symmetry results section : 3. Proof of Theorem 1.1 and related results section : 4. Proofs of Theorems 1.2, 1.3 and 1.4 section : 5. Conclusion and examples section : References