Some isoperimetric problems for the principal eigenvalues of second-order elliptic operators in divergence form

François Hamel; Nikolai Nadirashvili; Emmanuel Russ

Comptes Rendus. Mathématique, Volume 344 (2007) p. 169-174

An isoperimetric inequality for the principal eigenvalue of the Laplacian with drift

François Hamel; Nikolai Nadirashvili; Emmanuel Russ

Comptes Rendus. Mathématique, Volume 340 (2005) p. 347-352

Propagation speed for reaction–diffusion equations in general domains

Henri Berestycki; François Hamel; Nikolai Nadirashvili

Comptes Rendus. Mathématique, Volume 339 (2004) p. 163-168