Infinitely many radial solutions of an elliptic system
Integrability of the Bakirov system: a zero-curvature representation.
Interaction d'ondes simples pour des équations complètement non-linéaires
Invariant Hilbert spaces of holomorphic functions.
Invariant tensors and partial differential equations.
Invariants of characteristics of some systems of partial differential equations.
Inverses d'opérateurs faiblement hyperboliques à caractéristiques de multiplicité variable dans la classe des opérateurs de Volterra
Involutive distributions, invariant manifolds, and defining equations.
Ipoellitticità Gevrey per equazioni alle derivate parziali con caratteristiche di molteplicità elevata