Group classification of the general evolution equation: local and quasilocal symmetries.
Group Classification of Variable Coefficient Quasilinear Reaction-diffusion Equations
Harmonic Differential Operators.
Heat Flow out of Regions in IRm.
Higher-order differential equations represented by connections on prolongations of a fibered manifold.
The main goal of the present work is a generalization of the ideas, constructions and results from the first and second-order situation, studied in [63], [64] to that of an arbitrary finite-order one. Moreover, the investigation extends the ideas of [65] from the one-dimensional base X corresponding to O.D.E.
Highfrequency asymptotics of the field scattered by an obstacle near tangential rays.
Hodographic study of plane micropolar fluid flows.
Hypoelliptic operators with characteristic variety of codimension two and the wave equation
Hypoelliptic operators with double characteristics
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
Kelvin principle for a class of singular equations.
Lax integrable supersymmetric hierarchies on extended phase spaces.