Mat. Zametki, 1969, Volume 6, Issue 1

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1969, Volume 6, Issue 1

	Reduction of computable and potentially computable numerations V. A. Uspenskii		3
	Infinite nonabelian groups with minimal condition for non-normal subgroups S. N. Chernikov		11
	On the distribution of maximal sublattices Yu. A. Drozd		19
	Double trigonometric sums and their application in approximating rational sums N. M. Korobov		25
	Approximation of differentiable functions by Fourier–Hermite sums V. A. Abilov, S. A. Agahanov		35
	On the best approximation in the metric of $L$ to certain classes of functions by Haar-system polynomials N. P. Khoroshko		47
	Representation of Cauchy type integrals P. G. Yurov		55
	Self-adjoint abstract differential operators M. M. Gekhtman		65
	Semidegenerate algebras in a Pontryagin space A. I. Loginov		73
	Admissibility of the estimate of least squares. Unusual property of the normal law A. M. Kagan, O. V. Shalaevskii		81
	Ritz method for equations with small parameters for higher derivatives L. A. Kalyakin		91
	Results concerning the nature of the continuity of solutions of parabolic equations and some of their applications S. N. Kruzhkov		97
	Construction of an asymptotic expansion for the solution of a linear system of equations of neutral type with a small delay in the absence of a boundary layer V. I. Rozhkov		109
	Uniqueness theorem for convex surfaces Yu. E. Anikonov		115
	Symplectic and quasisymplectic Galois spaces Yu. G. Sokolova		119
	Representations of concrete categories in the category of sets M. S. Tsalenko		125