A Canonical Form of a System of Microdifferential Equations with Non-Involutory Characteristics and Branching of Singularities.
A characterization of some non-elliptic pseudo-differential operators as Fredholm operators.
A class of Feller semigroups generated by pseudo differential operators.
A class of generalized integral operators.
A Class of Hypoelliptic Pseudodifferential Operators with Double Characteristics.
A class of pseudo differential operators on the product of two manifolds and applications
A class of pseudo differential operators with multiple non-involutive characteristics
A discrete phenomenon in propagation of singularities
A general class of Gevrey-type pseudo differential operators
A generalization of Aubry-Mather theory to partial differential equations and pseudo-differential equations
A Global Construction for Pseudo-Differential Operators with Non-Involutive Characteristcs.
A necessary condition of local solvability for pseudo-differential equations with double characteristics
Pseudodifferential operators are studied, from the viewpoint of local solvability and under the assumption that, micro-locally, the principal symbol factorizes as with elliptic, homogeneous of degree , and homogeneous of degree one, satisfying the following condition : there is a point in the characteristic variety and a complex number such that at and such that the restriction of to the bicharacteristic strip of vanishes of order at , changing sign there from minus to...
A new criterion for local non-solvability of homogeneous left invariant differential operators on nilpotent Lie groups.
A non solvable operator satisfying condition ()
A note on continuity of pseudodifferential operators in Hardy spaces.
A note on the regularity of the solutions to two variational inequalities involving a pseudodifferential operator.
A problem of transversal anisotropic ellipticity
A Remark on Invariant Pseudo-Differential Operators.
A symbolic calculus and a parametrix construction for pseudodifferential operators with non-smooth negative definite symbols.
A Wiener algebra for the Fefferman-Phong inequality