John domains 6 Sobolev inequalities 6 Reverse doubling weights 4 Weighted Poincaré inequality 4 Weighted Sobolev inequality 4 Best constant 2 Best constants 2 BiLaplacian 2 Cusp domains 2 Eliptic problems 2 Fluorine containing polymers 2 Fractional norms 2 Invariance under isometries 2 Mathematical operators 2 Multiplicity results 2 Nodal solutions 2 Nonlincar boundary conditions 2 Paneitz-type operator 2 Poincaré inequality 2 Riemannian manifold 2 S-John domains 2 Second orders 2 Sobolev inequality 2 Sobolev space 2 Steklov eigenvalues 2 Sufficient conditions 2 Symmetric solution 2 Weighted Sobolev spaces 2 nonlocal problems 2