Izv. Vyssh. Uchebn. Zaved. Mat., 1990, Number 4

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

1990, Number 4

	On a study of a power Riemann boundary value problem E. P. Aksent'eva	3
	Construction of asymptotic expansions of solutions of a system of second-order linear integro-differential equations A. N. Voronoi, G. V. Zavizion	11
	New direct methods for solving integral equations of the third kind N. S. Gabbasov	15
	Functions of frame type and their applications S. V. Dorofeev, A. N. Sherstnev	23
	Problems on the convergence of series in systems $\{f(\tau\sp nx)\}^\infty_{n=0}$ A. V. Kasyanchuk	29
	Optimization, with respect to the number of arithmetic operations and entropy, of difference methods of linearization V. A. Kurchatov	33
	A measure of complexity for alternating automata with push-down memory I. R. Nasyrov	37
	Representation of the Fourier–Chebyshev series by a rational fraction E. S. Sinaiskii	45
	Geodesic mappings of some classes of Riemannian spaces V. S. Sobchuk	48
	Formulas for integration by parts for Feynman and Gaussian distributions on superspace A. Yu. Khrennikov	51
	Direct products and direct sums of torsion-free abelian $QCPI$-groups A. R. Chekhlov	58
	Choice of nodes for interpolation by parabolic splines A. A. Shumeiko	67

Brief communications
	An interpolation problem in spaces of entire functions of arbitrarily rapid growth T. I. Abanina	72
	Convergence of Lagrange interpolation processes in classes of differentiable functions O. V. Davydov	74
	General form of the Hahn–Banach–Kantorovich theorem Yu. A. Polonskii	77
	Sufficient conditions for the univalence of functions that are analytic in domains with boundaries, for which the ratio of the arch to the chord is finite V. P. Chuev, S. B. Shabalina	79