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 1993, Volume 29, Number 1

 Î öèêëå ðàáîò ïî ñïåêòðàëüíîé òåîðèè äèôôåðåíöèàëüíûõ îïåðàòîðîâV. A. Il'in 3 On regularized traces of an even-order differential equation with an unbounded operator coefficientM. S. Almamedov, M. Bayramoglu, V. I. Katanova 5 The basis property of a system of exponentials with shiftB. T. Bilalov 15 A necessary condition for the Riesz basis property of systems of root functions of an ordinary nonselfadjoint differential operatorV. D. Budaev 20 Some properties of root vector functions of a higher-order operatorV. D. Budaev 30 On sharpening an asymptotic theorem of TamarkinA. I. Vagabov 41 Regularized traces of higher-order elliptic operatorsV. V. Dubrovskii, A. S. Pechentsov 50 On a boundary value problem. IN. B. Kerimov, T. I. Allakhverdiev 54 Regularized higher-order traces for a harmonic oscillatorG. V. Kozlov, V. A. Lyubishkin 61 Representation and estimates of root functions of singular differential operators on an interval. IIL. V. Kritskov 64 On the basis property of systems of nonregular root vectors of higher-order differential operatorsI. S. Lomov 74 Necessary conditions for satisfying a Hilbert-type inequality for an arbitrary radial function in a system of eigenfunctions of the Laplace operatorA. A. Malov 87 On the eigenvalue problem for equations of mixed typeYa. N. Mamedov 95 Solvability of a boundary value problem by means of the spectral methodE. I. Moiseev 103 A condition for the basis of summation by the Abel method of series in root vectors of the nonselfadjoint Sturm–Liouville operatorM. A. Mustafin 116 An estimate for the difference of partial sums of spectral expansions of an absolutely continuous function that correspond to two one-dimensional Schrödinger operators with complex-valued potentials in the class $L_p$, for $p>1$E. I. Nikol'skaya 118 On the problem of the reconstruction of the potential in the Schrödinger operator on the line by means of the Born approximationV. S. Serov, D. S. Tkachenko 128 Distribution of the eigenvalues of the Sturm–Liouville operator in the Dirichlet problem for a truncated wedgeA. F. Ulitko, A. G. Kiselevskii, L. Shorfi 139 A Hilbert-type inequality in a system of eigen- and associated functions of an even-order differential operatorG. E. Shikina 145 A Dirac-type system with variable coefficientsV. Ya. Yakubov 156 Short Communications An existence theorem for the solution of a quasilinear boundary value problem on a semi-infinite intervalV. V. Gudkov 165 Approximation of the solution of an initial-value problemA. E. Zernov 168 On the complete global controllability of linear systems with aftereffects under restrictions on controlS. A. Minyuk 170 On the solution of boundary value problems for a filtration equation with an arbitrary integrable coefficient $P(y)$S. E. Kholodovskii 172 On the dissipativity of random processes determined by some nonlinear second-order differential equationsM. M. Shumafov 175 Avenir Arkad'evich VoronovS. V. Emel'yanov, V. A. Il'in, S. K. Korovin, I. M. Makarov, W. Pougatcheff, I. N. Sinitsyn, Ya. Z. Tsypkin 177