Differentsial'nye Uravneniya
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 Ordinary Differential Equations New frequency criteria for the absolute stability and instability of automatic control systems with nonstationary nonlinearityN. E. Barabanov 555 Divergence of normalizing transformations in the case of real structurally unstable focusV. V. Basov 563 A boundary value problem for fourth-order ordinary differential equationsS. A. Bespalova, Yu. A. Klokov 573 Estimates for the growth of solutions of differential equationsK. Kh. Boimatov, P. I. Lizorkin 578 Some uniqueness theorems in inverse problems of spectral analysis for Sturm–Liouville operators in the case of the Weyl limit circleM. G. Gasymov, G. Sh. Guseinov 588 The central exponent of a linear system of differential equationsO. G. Illarionova 599 The problem of the stability of singular points on the plane from the point of view of algebraic and analytic solvabilityN. B. Medvedeva 605 Oscillation and nonoscillation of solutions of first-order linear differential equations with deviating argumentV. A. Nadareishvili 611 Analytic solution of a linear functional-differential equation with linear deviation of the argumentV. I. Rodionov 616 Normal forms and regularization of nonlinear singularly perturbed evolution equationsV. F. Safonov 627 Classes of third-order systems with quadratic right-hand sides without moving critical pointsA. I. Yablonskii, A. F. Korzyuk 635 Partial Differential Equations Optimal control of linear loaded parabolic equationsM. T. Dzhenaliev (Jenaliyev) 641 Symmetrization of a hyperbolic equationS. E. Zhelezovsky, V. Ph. Kirichenko, V. A. Krys'ko 652 Smoothness of parabolic Pagni potentials. II. Proof of theorems on smoothness of direct values of Pagni potentialsL. I. Kamynin 659 Self-oscillatory solutions of a class of singularly perturbed boundary value problemsE. P. Kubishkin 674 $K$-limits of solutions of second-order quasilinear elliptic equationsB. P. Kufarev, N. G. Nikulina, B. V. Sokolov 686 Estimates for the Green function and for solutions of the second mixed problem for a parabolic equationA. V. Lezhnev 692 Solvability of a boundary value problem for hyperbolic equations in nonclassical domainsM. E. Lerner 704 Some expansions of arbitrary functions in integrals with respect to spherical functionsA. I. Moshinskii 716 Short Communications Necessary conditions for the basis property in the direct sum of Sobolev spacesE. P. Bogomolova 722 Estimates for solutions of quasilinear systems of parabolic typeM. I. Gil' 723 On a problem of Florio and SeibertB. S. Kalitin 727 Fractional powers of quasidifferential operators and theorems on the property of being a basisT. B. Kasumov 729