Cobo, Milton [UNESP]Gutierrez, CarlosLlibre, Jaume2014-05-272014-05-272002-12-01Canadian Journal of Mathematics, v. 54, n. 6, p. 1187-1201, 2002.0008-414Xhttp://hdl.handle.net/11449/67026Let X : ℝ2 → ℝ2 be a C1 map. Denote by Spec(X) the set of (complex) eigenvalues of DXp when p varies in ℝ2. If there exists ε > 0 such that Spec(X) ∩ (-ε, ε) = ∅, then X is injective. Some applications of this result to the real Keller Jacobian conjecture are discussed.1187-1201engArtigoWOS:000179787500004Acesso aberto2-s2.0-0036972513