Mat. Zametki, 1967, Volume 1, Issue 2

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1967, Volume 1, Issue 2

	Convergent rearrangements of series of functions E. M. Nikishin	129
	Best approximation of linear operators S. B. Stechkin	137
	Best approximation of differentiation operators V. V. Arestov	149
	Best approximation in the mean of certain classes of analytic functions L. V. Taikov	155
	On a theorem of A. F. Timan on the approximation of functions by polynomials on a finite interval I. E. Gopengauz	163
	Maximal subalgebras of commutative Banach algebras with involution E. A. Gorin	173
	Trace formulae for ordinary differential operators of higher orders V. A. Sadovnichii	179
	General Hardy–Littlewood equation A. I. Vinogradov	189
	Estimates of complete trigonometric sums A. A. Karatsuba	199
	Isometric non-deformable convex surfaces L. A. Shor	209
	Isomorphic imbeddability of a semigroup with an enumerable set of defining relations into a finitely presented semigroup V. L. Murskii	217
	Distribution of round-off error in the multiplication of two numbers on a computing machine with a fixed comma G. D. Kim, D. M. Chibisov	225

Doctoral theses
	Concerning the theory of embedding and continuing classes of differentiable functions O. V. Besov	235
	Regular representation as a whole of two-dimensional metric spaces of negative curvature È. G. Poznyak	244

Information
	Fifth International Congress on Cybernetics	251
	Eighth All-Union Colloquium on Abstract Algebra	252