Reduction of a hyperbolic equation to a symmetric hyperbolic system in the case of two space variables S. K. GodunovV. I. Kostin OriginalPaper Pages: 755 - 768
Nonexistence of closed asymptotic lines on a class of tubes with negative curvature B. E. Kantor OriginalPaper Pages: 768 - 773
Nontrivial solutions of equations with potential operators V. S. Klimov OriginalPaper Pages: 773 - 786
Quadrature formulas and the Poincare-Bertrand formula for singular integrals I. K. Lifanov OriginalPaper Pages: 787 - 797
Problem involving a directional derivative for multicomponent diffusion systems and chemical kinetics V. N. MaslennikovaN. V. Gapeeva OriginalPaper Pages: 797 - 804
Parametric representations of certain classes of functions regular in the upper half-plane L. Kh. Megrabyan OriginalPaper Pages: 805 - 815
Some properties of the expansions relative to the generalized eigenfunctions of carleman self-adjoint operators Yu. B. Orochko OriginalPaper Pages: 824 - 833
Integral representations of differentiable functions in domains with nonsmooth boundary Yu. G. Reshetnyak OriginalPaper Pages: 833 - 839
Subquasivarieties of nilpotent minimal non-Abelian group varieties A. N. Fedorov OriginalPaper Pages: 840 - 850
Lewy's theorem on the zeros of the Hessian of a harmonic function A. I. Yanushauskas OriginalPaper Pages: 861 - 865
Properties of approximate solutions of nonlinear equations of variable type M. M. Lavrent'ev-MI OriginalPaper Pages: 874 - 882
Solutions of a system of functional equations in the class of meromorphic functions L. I. Il'evskii OriginalPaper Pages: 883 - 890
Decidable fragments of universal theories and existentially closed models O. V. Belegradek OriginalPaper Pages: 898 - 902
Analytic continuation of the sum of a laplace series O. M. Logunova BriefCommunication Pages: 904 - 906
Some extremal properties of typically real functions V. V. Chernikov BriefCommunication Pages: 906 - 908
