# American Institute of Mathematical Sciences

January  2008, 21(1): 277-294. doi: 10.3934/dcds.2008.21.277

## Topological methods for an elliptic equation with exponential nonlinearities

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Received  December 2006 Revised  October 2007 Published  February 2008

We consider a class of variational equations with exponential nonlinearities on compact surfaces. From considerations involving the Moser-Trudinger inequality, we characterize some sublevels of the Euler-Lagrange functional in terms of the topology of the surface and of the data of the equation. This is used together with a min-max argument to obtain existence results.
Citation: Andrea Malchiodi. Topological methods for an elliptic equation with exponential nonlinearities. Discrete & Continuous Dynamical Systems - A, 2008, 21 (1) : 277-294. doi: 10.3934/dcds.2008.21.277
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