Mat. Zametki, 1990, Volume 47, Issue 4

JOURNALS // Matematicheskie Zametki // Archive

1990, Volume 47, Issue 4

	Vasilii Il'ich Nechaev (photo)
	Vasilii Il'ich Nechaev (on the occasion of his 70th birthday)	5
	Asymptotic behavior as $t\to\infty$ of solutions of exterior mixed problems that are periodic with respect to $t$ B. R. Vainberg	6
	A method for the expansion of a function of an operator in some problems of optimal control I. I. Golichev, R. L. Lookmanov	17
	Spaces of continuous functions on ordinals and ultrafilters S. P. Gul'ko	26
	The lattice of varieties of rigid lattice-ordered groups does not have the covering property S. A. Gurchenkov	35
	Surfaces with constant extrinsic geometry of negative curvature S. B. Kadomtsev	41
	Universal central extensions of groups of special automorphisms of free groups E. Ya. Markushina	46
	The existence of infinite bases with respect to superposition in certain classes of one-place functions S. S. Marchenkov	55
	Asymptotic representation of weights of a Gaussian quadrature formula A. L. Marshak	63
	Entire functions whose derivatives vanish at $p$ points S. G. Merzlyakov	69
	Conditions for the existence of a solution to the equation $y''=qy$ that does not belong to the space $\mathscr{L}^p(0,+\infty)$ K. A. Mirzoev	77
	A variant of a theorem on height for Lie algebras S. P. Mishchenko	83
	Addition of a prime number and the square of an integer I. V. Polyakov	90
	On a group of central locally splitting extensions T. G. Seregina	100
	Representation of analytic functions by series in solutions of differential equations Yu. N. Frolov	106
	Minimal Hamiltonian graphs with prescribed degree sets A. A. Chernyak	115
	A problem on nonlinear oscillations of a shallow shell in a quasistatic formulation I. D. Chueshov	128
	Decidability of the elementary theory of a finitely presented quasigroup L. V. Shabunin	138
	Surface measures on surfaces of finite codimension in a Banach space V. Yu. Yakhlakov	147

Brief Communications
	The Luzin–Privalov theorem for subharmonic functions M. G. Goluzina	157
	Letter to the Editor A. V. Shkred	160