4 papers
Numerical approaches to compute spectra of non-self adjoint operators in dimensions two and three
Fatima Aboud, François Jauberteau, Didier Robert
In this article we are interested for the numerical computation of spectra of non-self adjoint quadratic operators, in two and three spatial dimensions. Indeed, in the multidimensi…
Isotropic maps and moment map flow
François Jauberteau, Yann Rollin
We consider the moduli space of isotropic maps from a closed surface to a symplectic affine space and construct a Kähler moment map geometry, on a space of differential forms o…
On the multiplicity of the second eigenvalue of the Laplacian in non simply connected domains--with some numerics--
Bernard Helffer, Thomas Hoffmann-Ostenhof, François Jauberteau +1
We revisit an interesting example proposed by Maria Hoffmann-Ostenhof, the second author and Nikolai Nadirashvili of a bounded domain in R2 for which the second eigenvalue of the D…
Discrete geometry and isotropic surfaces
François Jauberteau, Yann Rollin, Samuel Tapie
We consider smooth isotropic immersions from the 2-dimensional torus into , for . When the image of such map is an immersed Lagrangian torus of . We…