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An ODE approach to the existence of positive solutions for semilinear problems in $$R^ n$$. (English) Zbl 0522.35036

##### MSC:
 35J60 Nonlinear elliptic equations 34B15 Nonlinear boundary value problems for ordinary differential equations 35A05 General existence and uniqueness theorems (PDE) (MSC2000) 35A35 Theoretical approximation in context of PDEs
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