Proves Pleijel-type asymptotic upper bound on nodal domains of eigenfunctions for a class of degenerate elliptic operators including Baouendi-Grushin, matching the Dirichlet Laplacian constant.
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Pleijel's theorem for a class of degenerate elliptic operators
Proves Pleijel-type asymptotic upper bound on nodal domains of eigenfunctions for a class of degenerate elliptic operators including Baouendi-Grushin, matching the Dirichlet Laplacian constant.