Sibirsk. Mat. Zh., 1989, Volume 30, Number 4

Sibirskii Matematicheskii Zhurnal

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1989, Volume 30, Number 4

	Sergei Konstantinovich Godunov (photo)
	Sergei Konstantinovich Godunov (on the occasion of his sixtieth birthday)		3–4
	Singular numbers of a boundary-value problem on the halfline for a linear system of ordinary differential equations S. K. Godunov, V. M. Gordienko		5–12
	Stability of shock waves in magnetohydrodynamics A. M. Blokhin, I. Yu. Druzhinin		13–29
	Generalization of a matrix Lyapunov equation A. Ya. Bulgakov		30–39
	A problem on the conditional well-posedness of a multipoint problem Yu. N. Valitskii		40–43
	Generalization of the frequency theorem in the case of an unbounded observation operator and its application to absolute stability problems V. G. Deich		44–52
	Localization of the eigenvalues of a certain spectral problem T. I. Zelenyak		53–61
	Class of problems of integral geometry on the plane M. M. Lavrent'ev		62–68
	Asymptotic integration of a convection problem V. B. Levenshtam		69–75
	Calculation of invariant subspaces of a regular linear matrix pencil A. N. Malyshev		76–86
	On the optimal recovery of functions of the class $E_p$ in an annulus M. P. Ovchintsev		87–101
	A condition for the closeness of the sets of the invariant subspaces of close matrices in terms of their Jordan structures V. R. Ol'shevskii		102–110
	Some properties of eigenfunctions of linear pencils S. G. Pyatkov		111–124
	Questions of the well-posedness of a problem of determining the speed of sound V. G. Romanov		125–134
	Hyperbolic equations of Maxwell’s nonlinear model of elastoplastic heat-conducting media E. I. Romenskii		135–159
	Asymptotic behavior of subfunctions of a Schrödinger operator of finite lower order A. M. Russakovskii		160–170
	An estimate for tri-diagonal matrices S. A. Sander		171–173
	Bifurcation of periodic solutions of a system of differential equations M. T. Terekhin		174–179
	Conditions for auto-oscillations in nonlinear systems E. A. Tomberg, V. A. Yakubovich		180–194
	Waveguides in a problem in hydromechanics A. Fraguela		195–209
	Cohomology of small categories with coefficients in an Abelian category with exact products A. A. Khusainov		210–215

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