Dokl. Akad. Nauk, 1997, Volume 352, Number 3

JOURNALS // Doklady Akademii Nauk // Archive

1997, Volume 352, Number 3

MATHEMATICS
	Boundary value problems for systems of ordinary differential equations associated with noncoercive forms K. Kh. Boimatov, K. Seddighi	295
	An algorithm for filtering and extrapolation of time series by splines V. A. Vinokurov	298
	On the spectrum of the degrees of decidable relations S. S. Goncharov, B. Khoussainov	301
	Solution of normally solvable operator equations in Banach spaces with a basis V. F. Zhuravlyov	304
	Projectivization of zeros of parabolic polynomials V. N. Karpushkin	307
	Characterization of generalized Chernikov groups V. I. Senashov	309
	Continuous selectors of multivalued mappings with nonclosed decomposable values, and their properties A. A. Tolstonogov	311

CONTROL THEORY
	Universal controllers for the optimal damping of forced oscillations in linear discrete systems A. Lindquist, V. A. Yakubovich	314

PHYSICS
	Characteristic vectors and characteristic tensors for spaces with a conformally flat metric I. G. Fikhtengol'ts	318

MECHANICS
	The spurt effect for viscoelastic fluids in the $4$-constant Oldroyd model Yu. A. Andrienko, M. A. Brutyan, I. F. Obraztsov, Yu. G. Yanovskii	327
	On the nonlinear problem of the reorientation of an asymmetric rigid body V. I. Vorotnikov	331
	Plane steady self-similar vortex flows of an ideal fluid (Keplerian motions) G. G. Chernii	335

GEOPHYSICS
	Lunar and seasonal variations of parameters of seismic waves generated by underground nuclear explosions S. K. Daragan	396
	New data on the Hindu Kush upper mantle structure Yu. F. Kopnichev	400
	Geothermal regime of the upper crust in the southern regions of East Siberia (Russia) S. V. Lysak, R. P. Dorofeeva	405