| Abstract: |
| We consider any energy bounded nodal radial solutions of critical elliptic problems in dimension $2$. Via the blow-up analysis, we classify the concentration compactness behaviour of them. Depending on the limit values of the parameters, we have three different behaviour: concentration with zero weak limit, concentration with nontrivial weak limit and compactness. The limit equation, the energy value and the blow--up rate of each concentration part are also obtained. |
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