boundary value problem meaning in French

problème aux limites

Her research topic was 'A boundary value problem of ordinary self-adjoint differential equations with singularities'.
Son sujet de recherche est A boundary value problem of ordinary self-adjoint differential equations with singularities.
His work in the field of mathematical physics regarded the boundary value problem of the equation of Laplace.
Ses travaux dans le domaine de la physique mathématique ont porté sur le problème des valeurs limites de l'équation de Laplace.