Includes bibliographical references.

The collection principle and the existential quantifier /; Optimal algorithms for solving problems of arrangement and covering of plane polygonal figures /; Completely flat monoids /; On a special representation of polynomials that are positive on a system of closed intervals /; Decomposition of entire functions of finite order into equivalent factors /; On coincidence of the ideal of strictly singular operators with the ideal of Phi admissible perturbations in Lorentz spaces /; A topology on the set of maximal ideals of a Banach PI-algebra /; On the solvability of nonlinear closed operator equations /; On the convergence of a modification of the Newton-Kantorovich method for closed operator equations /; Sigma programming / V. Yu. Sazonov; L. V. Nosov, E. G. Nosova, E. B. Rabinovich and V. Z. Feinberg; V. Flyaisher; M. G. Krein, B. Ya. Levin and A. A. Nudelman; B. N. Khabibullin; G. I. Russu; M. B. Abalovich and N. Ya. Krupnik; D. S. Dzhumabaev; D. S. Dzhumabaev; S. S. Goncharov and D. I. Sviridenko