Could you point me towards books and/or papers which treat the weak form of Laplace (Poisson) equation and determine the eigenvalues and eigenfunctions of the Laplacian using the variational method (minimisation over the Sobolev space $ H_0^1$)?
2026-03-31 16:17:05.1774973825
References for Laplace Equation, weak solutions and eigenvalues via the variational method
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