Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1989, Number 6

JOURNALS // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika // Archive

1989, Number 6

Mathematics
	The greatest prime divisor of an arithmetic sequence Kh. M. Abud	3
	Point interaction of three particles R. A. Minlos, M. Kh. Shermatov	7
	Universal covering rings and their radicals B. Zeković	14
	A criterion for algebraic independence of the values of an $E$-function at algebraic points A. B. Shidlovskii	17
	Infinite iterations of a functor of probability measures, and open mappings I. E. Ogorodnikova	21
	Stability of oscillations of a viscous liquid in a moving vessel A. V. Trubachev	24
	Some fundamental properties of the functor $P_f$ T. F. Zhuraev	29
	The order of growth of Lebesgue constants of Dirichlet kernels of monotone type M. I. Dyachenko	33

Mechanics
	Interaction of a rigid body with a deformable obstacle in oblique collision S. V. Romanova, A. Ya. Sagomonyan	38
	A Lagrangian Schwarzian derivative V. Yu. Ovsienko	42
	Accuracy evaluation for a number-analytic method applied to a Chaplygin problem Yu. V. Sungurtsev	45
	Electrovacuum five-parameter generalization of the Nutku–Halil vacuum solution in general relativity A. Garcia-Diaz	50

Short notes
	Calculation of the values of a weighted zeta function of the Sturm–Liouville operator V. E. Podolskii	54
	An infinite-dimensional van der Pol-type equation A. V. Tesalkin	56
	Nonexistence of some twelfth-order $4$-critical graphs I. A. Muzychuk	58
	Subgroups induced by ideals of the free group ring V. É. Shpil'rain	60
	The disjunction property and Church's thesis in arithmetic with Grzegorczyk logic N. A. Pankrat'ev	63
	Classification of bicompacta starting from Eberlein bicompacta E. N. Stepanova	65
	Position of subspaces in a space: relative versions of compactness of Lindelof property and of separation axioms A. V. Arkhangel'skii, Hamdy M. M. G.	67
	A pseudocompact space in which only the subsets of not full cardinality are not closed and not discrete E. A. Reznichenko	69
	On the theory of the rotation regulator V. A. Samsonov, M. A. Salmina	70
	A fast method for road microprofile spectral density measurement Vl. V. Prelov	74
	Distribution of the spectrum of a quadratic pencil S. A. El-Sharkawy	77
	Baire functions as restrictions of continuous functions I. V. Yaschenko	80
	Estimates for absolute widths of function classes A. S. Kochurov	82
	Primal and inverse problems for elastic block structures A. B. Efimov, D. G. Efimov	85

	German Fedorovich Laptev (on the occasion of the 80th anniversary of his birth) L. E. Evtushik, N. M. Ostianu, A. K. Rybnikov	88