1. The convergence of rearrangements of series of functions

   • E. M. Nikishin

   OriginalPaper Pages: 85 - 90

2. Best approximation of linear operators

   • S. B. Stechkin

   OriginalPaper Pages: 91 - 99

3. On the best approximation of differentiation operators

   • V. V. Arestov

   OriginalPaper Pages: 100 - 103

4. On the best approximation in the mean of certain classes of analytic functions

   • L. V. Taikov

   OriginalPaper Pages: 104 - 109

5. A theorem of A. F. Timan on the approximation of functions by polynomials on a finite segment

   • I. E. Gopengauz

   OriginalPaper Pages: 110 - 116

6. Maximal subalgebras of commutative Banach algebras with involution

   • E. A. Gorin

   OriginalPaper Pages: 117 - 120

7. Trace formulas for higher order ordinary differential operators

   • V. A. Sadovnichii

   OriginalPaper Pages: 121 - 126

8. The general Hardy-Littlewood equation

   • A. I. Vinogradov

   OriginalPaper Pages: 127 - 132

9. On estimates of complete trigonometric sums

   • A. A. Karatsuba

   OriginalPaper Pages: 133 - 139

10. Isometric nonsuperposable convex surfaces

    • L. A. Shor

    OriginalPaper Pages: 140 - 144

11. Isomorphic embeddability of semigroups with countable sets of defining relations in finitely defined semigroups

    • V. L. Murskii

    OriginalPaper Pages: 145 - 149

12. Distribution of rounding error in multiplication of two numbers on a fixed point computer

    • G. D. Kim
    • D. M. Chibisov

    OriginalPaper Pages: 150 - 155

13. Concerning the theory of embedding and continuing classes of differentiable functions

    • O. V. Besov

    OriginalPaper Pages: 156 - 161

14. Regular representation as a whole of two-dimensional metric spaces of negative curvature

    • é. G. Poznyak

    OriginalPaper Pages: 162 - 165

15. Fifth International Congress on Cybernetics

    Information Pages: 166 - 166

16. Eighth All-Union Colloquium on Abstract Algebra

    Information Pages: 167 - 167