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 harmonic disturbance rejection of an undamped Euler-Bernoulli beam with rigid tip body
A hybrid flexible beam equation with harmonic disturbance at the end where a rigid tip body is attached is considered. A simple motor torque feedback control is designed for which only the measured time-dependent angle of rotation and its velocity are utilized. It is shown that this control can impel the amplitude of the attached rigid tip body tending to zero as time goes to infinity.
On harmonic disturbance rejection of an undamped Euler-Bernoulli beam with rigid tip body
A hybrid flexible beam equation with harmonic disturbance at the end where a rigid tip body is attached is considered. A simple motor torque feedback control is designed for which only the measured time-dependent angle of rotation and its velocity are utilized. It is shown that this control can impel the amplitude of the attached rigid tip body tending to zero as time goes to infinity.
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.
On semilinear elliptic eigenvalue problem with eigenparameter in the boundary conditions.
On some new spectral estimates for Schrödinger-like operators
We prove the analog of the Cwikel-Lieb-Rozenblum estimate for a wide class of second-order elliptic operators by two different tools: Lieb-Thirring inequalities for Schrödinger operators with matrix-valued potentials and Sobolev inequalities for warped product spaces.
On some Schrödinger operators with a singular complex potential