On two problems studied by A. Ambrosetti

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On two problems studied by A. Ambrosetti David Arcoya (send correspondence to this author) Departamento de Analisis Matematico Universidad de Granada 18071-Granada, Spain E-mail address: and Jose Carmona Departamento de Algebra y Analisis Matematico Universidad de Almeria Almeria. Spain E-mail address: Dedicated to Antonio Ambrosetti on the occasion of his sixtieth birthday Abstract In this paper, we study the Ambrosetti-Prodi and Ambrosetti-Rabinowitz problems.

• differentiable mappings with singularities between banach spaces
• ambrosetti-prodi
• nonlinear anal
• positive function
• inversion
• existence
• solutions
• solution
• e.