Differ. Uravn., 1977, Volume 13, Number 4

Differentsial'nye Uravneniya

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1977, Volume 13, Number 4

Ordinary Differential Equations
	Second order matrix differential equations A. D. Avdeev	579–591
	Computation of the optimal control in a certain nonsmooth optimization problem E. E. Barbashina	592–600
	The Cauchy formula for a functional-differential equation V. P. Maksimov	601–606
	A method of Čaplygin type in a boundary value problem for a second order nonlinear differential equation V. E. Mirakov	607–615
	Linear systems that are connected by a relation of almost reducibility with systems of scalar type M. I. Rakhimberdiev	616–625
	Lösbarkeit von Randwertproblemen für einige Operator- Differentialgleichungen N. J. Yurchuk	626–636

Partial Differential Equations
	An analogue of the multipoint problem for a hyperbolic equation with constant coefficients V. I. Bernik, B. I. Ptashnic, B. O. Salyga	637–645
	On the construction of solution structures for boundary value problems V. M. Kolodiazhnyi, V. A. Rvachev	646–653
	The regularity of boundary points for second order degenerate elliptic equations D. A. Krupskaya	654–667
	The existence of a value for a certain class of differential games that can be described by a Goursat problem E. A. Markin	668–681
	Solution of a mixed problem for an equation of parabolic type with discontinuous coefficients M. L. Rasulov	682–692
	Properties of the solution of a certain Dirichlet problem on the plane with cuts Л. А. Starokadomsky	693–704

Finite difference equations. Numerical methods
	On the stability of the solutions of a certain class of discrete systems I. V. Gaishun	705–710
	Über Differenzen-Differentialapproximationen mehrdimensionaler Probleme der optimalen Steuerung mit räumlich verteilten Parametern F. V. Lubyshev	711–717
	Asymptotic behavior of the solution of a difference boundary value problem with the step as the small parameter I. S. Panchenko, B. G. Razumeiko	718–723
	Systems of elements of a space over a space, and variational methods for the solution of equations with variable operators A. T. Taldykin	724–732

Short Communications
	Third order homogeneous differential equations with univalent polar variable singular points V. K. Akhramenko	733–734
	A test for the absolute stability of oscillations in control systems with a nonstationary linear part I. M. Burkin	735–737
	A boundary value problem for singularly perturbed differential and difference systems when the unperturbed system lies on the spectrum A. B. Vasil'eva, M. V. Faminskaya	738–742
	Conditions for nonlocal continuability of the integral curves of vector fields Yu. E. Gliklikh	743–744
	Approximate solution of nonlinear differential equations by means of approximation by Gaussian functions A. P. Gol'dberg	745–748
	Inequalities of Gronwall, Bihari and Langenhop type for Pfaffian systems È. I. Grudo, L. F. Yanchuk	749–752
	Limit cycles of a system of relay type with polynomial right-hand side E. D. Zhitelzeif	753–755
	The stability of nonlinear differential and finite difference systems L. D. Zamkobaya, B. I. Kryukov	756–757
	Certain properties of an elliptic problem of Sobolev V. A. Lebedev	758–760
	The Bicadze–Samarskiǐ problem for an equation of parabolic type A. F. Napso	761–762
	Second order equations with operators that generate semigroups with singularities Yu. T. Sil'chenko	763–765
	Smooth conjugacy of systems of differential equations in the neighborhood of an asymptotically stable complex singular point S. P. Tokarev	766–769

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