Geodesic
A topological version of the Ambrosetti-Prodi theorem
Annales Polonici Mathematici, Tome 64 (1996) no. 2, pp. 121-130

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

The existence of at least two solutions for nonlinear equations close to semilinear equations at resonance is obtained by the degree theory methods. The same equations have no solutions if one slightly changes the right-hand side. The abstract result is applied to boundary value problems with specific nonlinearities.
DOI : 10.4064/ap-64-2-121-130
Keywords: multiple solution, resonance, functional-differential equation

Bogdan Przeradzki 1

1 
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Bogdan Przeradzki. A topological version of the Ambrosetti-Prodi theorem. Annales Polonici Mathematici, Tome 64 (1996) no. 2, pp. 121-130. doi: 10.4064/ap-64-2-121-130

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