Izv. Vyssh. Uchebn. Zaved. Mat., 1983, Number 8

JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

1983, Number 8

	Reconstruction of the domain of definition of the Helmholtz equation with a small parameter A. S. Barashkov	3
	Approximations of continuous periodic functions by linear positive methods of convolution type A. N. Davidchik	8
	Jet flow around a nonsmooth curvilinear obstacle A. M. Elizarov	11
	A necessary condition for an extremum in smooth problems with operator constraints V. I. Kazimirov, V. I. Plotnikov, I. M. Starobinets	21
	Inverse problem for the radial Schrödinger equation in the case of fixed energy and variable orbital moment N. M. Kostenko	27
	On the question of approximating functions that are continuous on a segment by truncated de la Vallée–Poussin sums L. N. Labunets	32
	Bending of a near-polygonal plate with a free open boundary V. G. Maz'ya, S. A. Nazarov, B. A. Plamenevskii	34
	Construction of lower and upper functions for a boundary value problem of a system of second-order quasilinear parabolic equations I. N. Maiboroda	41
	An alternative in a minimax differential game for systems with aftereffect V. L. Pasikov	45
	The operation of Cartesian product A. G. Pinus	51
	Norms of operators that are Fourier–Legendre partial sums S. Z. Rafal'son	54
	Perturbations of a weighted shift operator O. I. Soibel'man	60
	A linear problem for a system of hyperbolic type in a characteristic quadrangle O. M. Teut	64

Brief communications
	A property of kernels of families of Noether operators representing elements from $\widetilde K(S^{2n})$ P. V. Nikolenko	74
	Combined criteria for univalence of functions analytic in the disk D. V. Prokhorov	76
	An approach to the solution of a two-point boundary value problem for a system of first-order differential equations with linear deviation of the argument V. N. Semenova, V. S. Mokeichev	78
	A three-parameter family of planes with a finite number of points in a plane of the family B. S. Sushnikov	80
	Stationary subsets of ordered Menger algebras V. S. Trohimenko	82
	An algebra of distributions connected with a light cone V. M. Shelkovich	84