4 research outputs found

    Partially integrable nonlinear equations with one higher symmetry

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    In this letter, we present a family of second order in time nonlinear partial differential equations, which have only one higher symmetry. These equations are not integrable, but have a solution depending on one arbitrary function

    The nontangential maximal function and the Lusin area integral for solutions of a second order elliptic equation

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    Boundary-value problems for elliptic functional-differential equations and their applications

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