The Cauchy problem and Hadamard's example
The Cauchy problem for coupled Yang-Mills and scalar fields in the Lorentz gauge
The Cauchy problem for second-order elliptic systems on the plane.
The distribution of energy in the Brownian motion in the Gaussian field and analytic-hypoellipticity of certain subelliptic operators on the Heisenberg group
The Edge-of-Wedge Theorem for Systems of Constant Coefficient Partial Differential Operators. II.
The Edge-of-Wedge Theorem for Systems of Constant Coefficient Partial Differential Operators. I.
The existence of global solutions to the elliptic-hyperbolic Davey-Stewartson system with small initial data
The Existence of Wave Operators in Scattering Theory.
The Fundamental Solution for the Kohn-Laplacian ....b on the Sphere in Cn.
The reverse Hölder inequality for the solution to -harmonic type system.
The surjectivity of a constant coefficient homogeneous differential operator in the real analytic functions and the geometry of its symbol
Hörmander has characterized the surjective constant coefficient partial differential operators on the space of all real analytic functions on by a Phragmén-Lindelöf condition. Geometric implications of this condition and, for homogeneous operators, of the corresponding condition for Gevrey classes are given.
Theoretical aspects and numerical computation of the time-harmonic Green's function for an isotropic elastic half-plane with an impedance boundary condition
This work presents an effective and accurate method for determining, from a theoretical and computational point of view, the time-harmonic Green's function of an isotropic elastic half-plane where an impedance boundary condition is considered. This method, based on the previous work done by Durán et al. (cf. [Numer. Math.107 (2007) 295–314; IMA J. Appl. Math.71 (2006) 853–876]) for the Helmholtz equation in a half-plane, combines appropriately analytical and numerical techniques, which has an important...
Théorie de la diffusion à courte portée pour des opérateurs à caractéristiques simples
Two-dimensional steady-state oscillation problems of anisotropic elasticity.