Mat. Zametki, 1980, Volume 27, Issue 5

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1980, Volume 27, Issue 5

	Finite groups with a Sylow 2-subgroup having elementary commutant of order 8 A. S. Kondrat'ev		673
	Best linear approximation of some classes of differentiable periodic functions V. F. Babenko, S. A. Pichugov		683
	Representation of monotonic functions by trigonometric series A. Yu. Petrovich		691
	Existence of continuable bases in spaces of functions, analytic in compacta V. P. Zaharyuta, S. N. Kadampatta		701
	Some properties of the Walsh system S. V. Levizov		715
	Extremal interpolation with least norm of linear differential operator V. T. Shevaldin		721
	Inverse function theorem in locally convex spaces M. F. Sukhinin		741
	Analytical properties of Poincaré series of a loop space I. K. Babenko		751
	Stability of leaves of a foliation with a compatible Riemannian metric V. A. Igoshin, Ya. L. Shapiro		767
	Isometric embedding of two-dimensional manifolds of negative curvature by the Darboux method E. V. Shikin		779
	Minimization of the computational labor in determining the first eigenvalues of differential operators E. G. D'yakonov, M. Yu. Orekhov		795
	Monotonicity of mean values of subharmonic functions in a ring L. A. Aksent'ev, Yu. A. Reshetnikov		813
	Roots of unity as nonfree points of the complex plane Yu. A. Ignatov		825
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