Best constants in second-order Sobolev inequalities on compact Riemannian manifolds in the presence of symmetries

Let (M,g) be a smooth compact 3\leq n-dimensional Riemannian manifold, and G a subgroup of the isometry group of (M,g). We establish the best constants in second-order for a Sobolev inequality when the functions are G-invariant.

Best constants in second-order Sobolev inequalities on compact Riemannian manifolds in the presence of symmetries

Let (M,g) be a smooth compact 3\leq n-dimensional Riemannian manifold, and G a subgroup of the isometry group of (M,g). We establish the best constants in second-order for a Sobolev inequality when the functions are G-invariant.

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  • Mohammed ALI Received: 09.07.2009
  • Department of Mathematics and Statistics,
  • Jordan University of Science and Technology,
  • Irbid, 22110, JORDAN
  • e—mail: myali@just.edu.jo