The case of the Laplace–Beltrami operator on a closed Riemannian manifold has been most intensively studied, although other Laplace operators in differential geometry have also been examined.
Kasus operator Laplace–Beltrami pada sebuah manifold Riemannian tertutup telah dipelajari paling intensif, meskipun operator Laplace dalam geometri diferensial lainnya juga dieksaminasi.