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Estimations a priori pour les solutions positives de problèmes elliptiques superlineaires. (French) Zbl 0423.35048

MSC:
35J65 Nonlinear boundary value problems for linear elliptic equations
35B45 A priori estimates in context of PDEs
47H10 Fixed-point theorems
47J05 Equations involving nonlinear operators (general)
55M25 Degree, winding number
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