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Feedback design of differential equations of reconstruction for second-order distributed parameter systemsThe paper aims at studying a class of second-order partial differential equations subject

On Backlund transformations for some second-order nonlinear differential equationsWe obtain second-order nonlinear differential equations (and the associated Backlund

GRADIENT ESTIMATE FOR SOLUTIONS OF SECOND-ORDER ELLIPTIC EQUATIONSGRADIENT ESTIMATE FOR SOLUTIONS OF SECOND-ORDER ELLIPTIC EQUATIONS

First and Second Order of Accuracy Difference Schemes for Third Order Partial Differential EquationIn this paper, we consider a local boundary-value problem for a third-order partial differential

The projective geometric theory of systems of second-order differential equations: Straightening and symmetry theorems of m second-order ordinary differential equations y→̈ = f→(t, y→, y→̇) with m unknown functions y1(t

On Generalized Solutions of the Second Boundary-Value Problem for Differential-Difference Equations with Variable CoefficientsWe consider the second boundary-value problem for a second-order differential-difference equation

On direct variational formulations for second order evolutionary equationsOn direct variational formulations for second order evolutionary equations

Uniqueness theorem for linear elliptic equation of the second order with constant coefficients order differential equation of elliptic type with constant coefficients.

Inner uniqueness theorem for second order linear elliptic equation with constant coefficients of second order, and prove that it vanishes if zeros of f condense to two points along non-collinear rays

On Generalized Solutions of the Second Boundary Value Problem for Differential-difference Equations with Variable CoefficientsThe second boundary value problem for a second order differential-difference equation with variable

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