Izv. Vyssh. Uchebn. Zaved. Mat., 1990, Number 9

JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

1990, Number 9

	Series in systems of Haar type E. A. Vlasova	3
	Homomorphisms of quasigeodesic flows of the second degree V. A. Igoshin	14
	The differential-geometric structure of a hyperbolic system of first-order nonlinear equations with two independent variables Kh. O. Kil'p	22
	Irreducible normally flat semisymmetric submanifolds. II Ü. G. Lumiste	31
	A core (in the sense of Knopp) of a sequence and its conservative matrix means G. A. Mikhalin, E. V. Mokhort, L. S. Teslenko	41
	Analytic methods for solving some ill-posed problems, and regularization A. G. Pavel'ev	45
	Embedding operators of spaces of analytic functions of the class $\gamma_q$, $0<q\le2$ O. G. Parfenov	51
	Differentiability of a Hammerstein operator and solvability of a nonlinear Hammerstein equation A. V. Sobolev, V. I. Sobolev	55
	Convergence in measure in regular noncommutative symmetric spaces F. A. Sukochev, V. I. Chilin	63
	A model case of the generalized Christoffel problem in a three-dimensional Euclidean space A. Kh. Khakimov	70
	The set on which an entire function is bounded below A. I. Shcherba	75
	Almost reducibility of linear differential equations on manifolds N. I. Yatskin	81

Brief communications
	Solvability of the system $Ax=0$, $x\ge0$, with indeterminate coefficients G. V. Davydov, I. M. Davydova	85
	Derivatives of some multivalued mappings L. I. Minchenko	88