Nonlinear perturbations of linear elliptic and parabolic problems at resonance : existence of multiple solutions
Nonlinear potential equations with linear parts at resonance
Non-self-adjoint singular Sturm-Liouville problems with boundary conditions dependent on the eigenparameter.
Non-trapping condition for semiclassical Schrödinger operators with matrix-valued potentials.
Normale Auflösbarkeit bei linearen partiellen Differentialoperatoren in lokalen gewichteten Sobolevräumen.
On a class of elliptic differential operators degenerating at one point
On a class of non linear differential operators of first order with singular point.
On a Class of Pseudodifferential Operators with Double Characteristics.
On a class of unsolvable operators
On a nonlinear elliptic boundary value problem
On a solvability condition for systems with an injective symbol in terms of iterations of double layer potentials.
On a theorem of Jörgens and Chernoff concerning essential self-adjointness of Dirac operators.
On coupling constant thresholds and related eigenvalue properties of Dirac operators.
On exponential growth of solutions of abstract initial value problems
On iterations of Green type integrals for matrix factorizations of the Laplace operator
Convergence of special Green integrals for matrix factorization of the Laplace operator in is proved. Explicit formulae for solutions of -equation in strictly pseudo-convex domains in are obtained.
On local properties of some classes of infinitely degenerate elliptic differential operators.
On Lp estimates for square roots of second order elliptic operators on Rn.
On Non-Degeneracy of the Ground State of Schrödinger Operators.
On one class of matrix differential operators.
On reduction of linear two variable functional equations to differential equations without substitutions.