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## BASM n.3 (3), 1990

Research Paper Short Communications Rings of continuous functions into the extended straight line. (Russian) Ipate D. M. pp.3-7 Topology of free topological algebras with the Mal'tsev condition and a $k$-space. (Russian) Kiriyak L. L. pp.7-13 Noethericity criteria for singular integral equations with linear-fractional shift in the space $L^\gamma\sb p$. (Russian)Nyaga V. I. pp.14-18 Distinguishing the cases of the center and focus for cubic systems with six parameters. (Russian) Danilyuk V. I., Shube A. S. pp.18-21 Approximate solutions of systems of singular integral equations in the space $L_p$. (Russian) Zolotarevskij V. A. pp.22-26 The absence of eigenvalues in a perturbed discrete Wiener-Hopf operator. (English) Kozhukhari P. A. pp.26-35 Use of the embeddability properties of polyhedral sets in the study and solution of some special classes of problems. (Russian)Lozovanu Dmitrii pp.35-40 Hybrid Fourier-Hankel integral transforms of the Fourier second kind on a right-bounded half-axis. (Russian) Paskari A. A. pp.40-49 Calculation of automorphisms and anti-automorphisms of quasigroups. (Russian) Safonova L. V., Shchukin K. K. pp.49-55 The Levinson center of dispersible dissipative dynamical systems. (Russian) Sulaiman Fakeeh Derar pp.55-59 Primal ideals and pretorsions. (Russian) Bunu I. D., Goyan I. M., Tebyrtse E. I. pp.60-61 Solution of exterior boundary value problems for an operator that the Helmholtz operator. (Russian) Suveika I. V. pp.61-64 Compatibility of a pair of projectors in a Banach space. (Russian) Felidman I. A. pp.64-65 Simplicity of a quasigroup and primitivity of its multiplication group. (Russian) Shchukin K. K. pp.66-68 Conditions for qualitative pictures with centers for a complete quadratic system with $I\sb 9=0, K\sb 1\not\equiv 0$. Calin Iurie pp.68-71 Conditions for the expressibility of one-place formulas in the logic of the 8-element topo-Boolean algebra with one open atom. (Russian) Koban M. A. pp.71-73 Regular nonnormal partitions of a Lobachevskij space by noncompact polyhedra. (Russian) Balkan V. V. pp.74-76