Bifurcation and Asymptotics for Elliptic Problems with Singular Nonlinearity

Details Bifurcation and Asymptotics for Elliptic Problems with Singular Nonlinearity Bifurcation and Asymptotics for Elliptic Problems with Singular Nonlinearity

2005-02-07

arxiv.org/abs/math/0502142v1

Mathematics

Analysis of PDEs

Scientific paper

We report on some recent existence and uniqueness results for elliptic equations subject to Dirichlet boundary condition and involving a singular nonlinearity. We take into account the following types of problems: (i) singular problems with sublinear nonlinearity and two parameters; (ii) combined effects of asymptotically linear and singular nonlinearities in bifurcation problems; (iii) bifurcation for a class of singular elliptic problems with subquadratic convection term. In some concrete situations we also establish the asymptotic behaviour of the solution around the bifurcation point. Our analysis relies on the maximum principle for elliptic equations combined with adequate estimates.

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