Jacek Komorowski has written:
'A minorization of the first positive eigenvalue of the scalar laplacian on a compact Riemannian manifold' -- subject(s): Eigenvalues, Laplacian operator, Riemannian manifolds
'Nets on a Riemannian manifold and finite-dimensional approximations of the Laplacian' -- subject(s): Laplacian operator, Riemannian manifolds