Differ. Uravn., 1968, Volume 4, Number 3

Differentsial'nye Uravneniya

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1968, Volume 4, Number 3

	Proof of the existence of irregular systems of linear differential equations with almost periodic coefficients V. M. Millionshchikov	391–396
	Investigation of the asymptotic properties of a differential equation encountered in certain kinetics problems A. B. Vasil'eva	397–408
	Linear optimal processes with unbounded control. I Yu. P. Krivenkov	409–422
	Certain analytic singularities in the solution of a differential equation in the case of a focus A. N. Erugin	423–428
	Asymptotics of the solutions of a linear ordinary second order differential equation with transition point dependent on a parameter V. V. Pukhnachov	429–438
	The algebraic reducibility of systems of linear differential equations. I A. K. Lopatin	439–445
	A certain criiterion for Ljapunov stability T. Wang	446–458
	Certain estimates of the method of averaging for multifrequency systems of ordinary differential equations E. A. Grebenikov	459–473
	The completeness of a Floquet type system of solutions for equations with retardation A. M. Zverkin	474–478
	Solutions of the Briot and Bouquet equation with deviating argument È. I. Grudo	479–490
	Asymptotics of the solution of a certain problem for a nonlinear integro-differential equation with a small parameter at the derivative V. F. Butuzov	491–507
	On the question of the applicability of the maximum principle to an elliptic difference equation A. L. Teptin	508–517
	The summation of principal vector expansions of certain nonselfadjoint differential operators S. M. Dolganova	518–525
	A certain class of solutions of a system of integro-differential equations A. A. Mirolubov	526–532
	Über eine Aufgabe der Theorie des Wärmeaustauschs V. V. Shapovalov	533–538
	Solutions of certain differential equations in classes of functions quasianalytic with respect to differential operators V. G. Hryptun	539–546

Short Communications
	The construction of the set of initial points of the integral lines contained in a half-plane for a linear Hamiltonian system of two equations with periodic coefficients A. D. Myshkis, А. А. Sharshanov	547–550
	A new proof of the instability of the characteristic exponents of a certain regular system Kh. Yu. Kurdanov	551–552
	The convergence of Galerkin's method for the Cauchy problem of a system of nonlinear hyperbolic equations with two independent variables È. I. Kucherenko	553–555

	Letter to the editor V. B. Ryvkin	556
	Библиография журнальных статей A. R. Shakun	557–563
	Поправка L. I. Kamynin	564

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