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Author Index, 1991, Volume 50
A. V. Arutyunov
Properties of quadratic maps in a Banach space
Mat. Zametki, 1991, Volume 50:4, 10–20
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N. A. Il'yasov
Inequality between moduli of smoothness of different orders in different metrics
Mat. Zametki, 1991, Volume 50:2, 153–155
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N. A. Il'yasov
An inverse approximation theorem in various metrics
Mat. Zametki, 1991, Volume 50:6, 57–65
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S. S. Akbarov
Derivatives of the algebra of smooth functions on a locally compact Abelian group
Mat. Zametki, 1991, Volume 50:2, 3–13
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A. M. Akimenkov
Subgroups of the braid group $B_4$
Mat. Zametki, 1991, Volume 50:6, 3–13
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Yu. A. Alkhutov
Smoothness and limiting properties of solutions of a second-order parabolic equation
Mat. Zametki, 1991, Volume 50:4, 150–152
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Yu. A. Alkhutov
Removable singularities of solutions of second-order parabolic equations
Mat. Zametki, 1991, Volume 50:5, 9–17
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B. P. Allakhverdiev
Self-adjoint and non-self-adjoint extensions of the symmetric operator generated by an infinite Jacobi matrix
Mat. Zametki, 1991, Volume 50:5, 3–8
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S. Z. Arutyunyan
The geometry of submanifolds of a pseudo-Euclidean space $E^n_{2n}$
Mat. Zametki, 1991, Volume 50:3, 3–11
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O. A. Asadchii
Maximum principle for spatial quasiconformal mappings
Mat. Zametki, 1991, Volume 50:6, 14–23
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T. Ya. Azizov, V. L. Khatskevich
Some applications of the theory of operators in Krein spaces to the solvability of nonlinear Hamiltonian systems
Mat. Zametki, 1991, Volume 50:4, 3–9
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V. F. Babenko
On best uniform approximations by splines in the presence of restrictions on their derivatives
Mat. Zametki, 1991, Volume 50:6, 24–30
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M. V. Babich
Real finite-gap solutions of the equation $\Delta u=\ch u$
Mat. Zametki, 1991, Volume 50:1, 3–9
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G. V. Badalyan, M. O. Edigaryan
Solution of a problem of Mendeleev type and the estimation of the derivatives of polynomials in the Laguerre weighted space $L^2$
Mat. Zametki, 1991, Volume 50:1, 10–18
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M. T. Baitukenov
Implicit-function subdifferentiation formulas for Lipschitz mappings
Mat. Zametki, 1991, Volume 50:2, 152–153
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A. G. Bakan
Separability and distance
Mat. Zametki, 1991, Volume 50:5, 18–22
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È. S. Belinskii
Estimates for the Kolmogorov diameters of classes of functions with conditions on the mixed difference in the uniform metric
Mat. Zametki, 1991, Volume 50:5, 147–149
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A. S. Belov
Partial sums of a trigonometric series with convex coefficients
Mat. Zametki, 1991, Volume 50:4, 21–27
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V. I. Bernik, É. I. Kovalevskaya
Two-dimensional extremal surfaces with jointly extremal partial derivatives
Mat. Zametki, 1991, Volume 50:2, 14–19
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N. A. Bobylev
The Helly intersection theorem
Mat. Zametki, 1991, Volume 50:4, 28–32
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L. V. Bogachev, S. A. Molchanov, L. A. Pastur
On the level density of random band matrices
Mat. Zametki, 1991, Volume 50:6, 31–42
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K. Kh. Boimatov, Ya. T. Sultanaev
Estimation of the negative spectrum of a lower semibounded self-adjoint operator
Mat. Zametki, 1991, Volume 50:6, 142–145
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A. A. Bondarenko
Structure of the adèle group of a product of algebraic groups
Mat. Zametki, 1991, Volume 50:4, 33–37
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O. Yu. Borenshtein, V. S. Shulman
A minimax theorem
Mat. Zametki, 1991, Volume 50:1, 139–141
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V. A. Borovikov
Sturm–Liouville problem with irregular asymptotics of eigenvalues
Mat. Zametki, 1991, Volume 50:6, 43–51
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A. A. Budagov
Peano curves and moduli of continuity
Mat. Zametki, 1991, Volume 50:2, 20–27
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V. S. Buyarov
Logarithmic asymptotics of polynomials orthogonal on $R$ with asymmetric weights
Mat. Zametki, 1991, Volume 50:2, 28–36
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I. V. Chekalov
Cartan extensions of stabilizers of exterior forms
Mat. Zametki, 1991, Volume 50:1, 118–121
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E. M. Chirka, see M. M. Smirnov
Mat. Zametki, 1991, Volume 50:5, 81–89
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A. A. Danielyan, B. M. Levitan, A. B. Khasanov
Asymptotic behavior of Weyl–Titchmarsh m-function in the case of the Dirac system
Mat. Zametki, 1991, Volume 50:2, 67–76
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V. G. Danilov
Asymptotic finite solutions of degenerate quasilinear parabolic equations with small diffusion
Mat. Zametki, 1991, Volume 50:2, 77–88
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V. G. Danilov, P. Yu. Subochev
Interaction of kinks in the KPP–Fisher equation
Mat. Zametki, 1991, Volume 50:3, 152–154
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A. N. Degtev
The semilattice of computable families of recursively enumerable sets
Mat. Zametki, 1991, Volume 50:4, 61–66
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V. A. Dem'yanenko
Estimate for the remainder in the Tate formula
Mat. Zametki, 1991, Volume 50:5, 149–151
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C. Dodson, M. E. Vazquez-Abal
Tangent and frame bundle harmonic lifts
Mat. Zametki, 1991, Volume 50:3, 27–37
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M. O. Edigaryan, see G. V. Badalyan
Mat. Zametki, 1991, Volume 50:1, 10–18
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E. V. Ferapontov
Equations of hydrodynamic type from the point of view of the theory of webs
Mat. Zametki, 1991, Volume 50:5, 97–108
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O. P. Filatov
Estimates of support functions of averaged differential inclusions
Mat. Zametki, 1991, Volume 50:3, 135–142
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T. N. Fomenko
Algebraic properties of certain cohomological invariants of equivariant mappings
Mat. Zametki, 1991, Volume 50:1, 108–117
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A. Fraguela Collar
Some questions of the spectral theory of operator-matrices
Mat. Zametki, 1991, Volume 50:2, 157–159
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N. S. Gabbasov
New variants of the collocation method for integral equations of the third kind
Mat. Zametki, 1991, Volume 50:2, 47–53
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O. D. Gabisoniya
A relation between Fourier and Fejér sums
Mat. Zametki, 1991, Volume 50:1, 19–33
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A. M. Gaisin
A uniqueness theorem for Dirichlet series
Mat. Zametki, 1991, Volume 50:2, 54–60
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A. M. Gaisin
Behavior of the sum of a Dirichlet series having a prescribed growth
Mat. Zametki, 1991, Volume 50:4, 47–56
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Kh. P. Gambaryan
Properties of $CR$-functions and their restrictions to submanifolds
Mat. Zametki, 1991, Volume 50:2, 61–66
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R. Ya. Glagoleva
Behavior as $t\to+\infty$ of positive solutions of the first boundary value problem for semilinear parabolic equations
Mat. Zametki, 1991, Volume 50:3, 12–19
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V. V. Gorbatsevich
A completeness criterion of subgroups of finite covolume in a Lie group
Mat. Zametki, 1991, Volume 50:6, 52–56
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K. Yu. Gorbunov
There does not exist an enumerable family of context-free grammars that generates the class of single-valued languages
Mat. Zametki, 1991, Volume 50:1, 34–40
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S. A. Grigoryan, M. I. Zaslavskaya
Real parts of functional algebras
Mat. Zametki, 1991, Volume 50:3, 20–26
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V. A. Grinshtein
Basis property of a part of the system of eigenvectors of a holomorphic operator-function
Mat. Zametki, 1991, Volume 50:1, 142–144
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M. A. Hirnyk
Approximation of a subharmonic function of infinite order by the logarithm of the modulus of an entire function
Mat. Zametki, 1991, Volume 50:4, 57–60
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R. S. Ismagilov
Operators and generalized functions, decomposable with respect to systems of coordinates
Mat. Zametki, 1991, Volume 50:3, 44–53
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A. G. Kachurovskii
Fluctuation of averages in the strong law of large numbers
Mat. Zametki, 1991, Volume 50:5, 151–153
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V. M. Kadets
A remark on the trigonometric basis
Mat. Zametki, 1991, Volume 50:3, 54–57
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L. A. Kalyakin
Asymptotics of an integral that arises in the theory of perturbations of KdV solitons
Mat. Zametki, 1991, Volume 50:5, 32–42
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I. G. Karelina, see Yu. V. Pokorny
Mat. Zametki, 1991, Volume 50:2, 155–157
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B. S. Kashin
Algebraic polynomials with integer coefficients deviating little from zero on an interval
Mat. Zametki, 1991, Volume 50:3, 58–67
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A. B. Khasanov, see A. A. Danielyan
Mat. Zametki, 1991, Volume 50:2, 67–76
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V. L. Khatskevich, see T. Ya. Azizov
Mat. Zametki, 1991, Volume 50:4, 3–9
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E. I. Khukhro
Nilpotency in varieties of groups with operators
Mat. Zametki, 1991, Volume 50:2, 142–145
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A. Yu. Kitaev
Approximative evaluation of the height of the maximal upper zero of a monotone Boolean function
Mat. Zametki, 1991, Volume 50:1, 41–45
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V. M. Klimkin, T. A. Sribnaya
Condition for a regular set function in a topological space to be exhaustive
Mat. Zametki, 1991, Volume 50:5, 43–47
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A. V. Knyazev
On diameters of 2-regular graphs
Mat. Zametki, 1991, Volume 50:1, 46–55
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A. V. Koldunov
Automatic continuity of operators in vector lattices
Mat. Zametki, 1991, Volume 50:4, 67–74
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V. N. Kolokoltsov
Application of quasi-classical methods in a study of the Belavkin quantum filtration
Mat. Zametki, 1991, Volume 50:5, 153–156
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A. A. Kosmodem'yanskii (Jr.)
Isoperimetric estimates of the second boundary value problem for the Poisson equation
Mat. Zametki, 1991, Volume 50:5, 48–53
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É. I. Kovalevskaya, see V. I. Bernik
Mat. Zametki, 1991, Volume 50:2, 14–19
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M. Yu. Kradinov
Diffusion approximation of star-shaped symmetric networks with losses
Mat. Zametki, 1991, Volume 50:1, 144–146
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I. V. Kuku
The cardinality of parametric bases in chain logics
Mat. Zametki, 1991, Volume 50:3, 68–75
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É. A. Kuliev
Infinite nontangential limits of harmonic functions
Mat. Zametki, 1991, Volume 50:3, 76–80
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N. G. Kuznetsov
Integral equations for the problem of stationary waves produced by a floating body
Mat. Zametki, 1991, Volume 50:4, 75–83
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V. P. Leksin
Riemann–Hilbert problem for analytic families of representations
Mat. Zametki, 1991, Volume 50:2, 89–97
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B. M. Levitan, see A. A. Danielyan
Mat. Zametki, 1991, Volume 50:2, 67–76
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A. A. Lokshin, E. A. Sagomonyan
Factorizations of a nonlinear wave equation
Mat. Zametki, 1991, Volume 50:6, 66–70
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V. V. Lychagin
Solvability of Fuchsian equations depending on a parameter
Mat. Zametki, 1991, Volume 50:6, 71–84
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G. G. Magaril-Il'yaev, K. Yu. Osipenko
Optimal recovery of functionals based on inaccurate data
Mat. Zametki, 1991, Volume 50:6, 85–93
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T. A. Makanina
Some special braids
Mat. Zametki, 1991, Volume 50:2, 98–104
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E. N. Makhmudov
Optimization of differential inclusions with state constraints and duality
Mat. Zametki, 1991, Volume 50:6, 94–104
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V. A. Malovichko
Solvability of boundary value problems for fourth order systems of differential equations
Mat. Zametki, 1991, Volume 50:2, 105–110
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L. A. Malozemov
Spectrum of a random Schrödinger difference operator
Mat. Zametki, 1991, Volume 50:3, 81–86
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V. P. Maslov
Change of the extreme scale in turbulent flow from Kolmogorov to Taylor type in dependence of external noise
Mat. Zametki, 1991, Volume 50:3, 154–155
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D. A. Mel'nikov
Smoothing of Stanley–Reisner type singularities
Mat. Zametki, 1991, Volume 50:1, 56–64
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K. A. Mirzoev
Existence conditions for solutions of quasidifferential equations which do not belong to the space $\mathscr L^p(0,+\infty)$
Mat. Zametki, 1991, Volume 50:6, 105–115
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O. I. Mokhov
Canonical Hamiltonian representation of the Krichever–Novikov equation
Mat. Zametki, 1991, Volume 50:3, 87–96
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S. A. Molchanov, see L. V. Bogachev
Mat. Zametki, 1991, Volume 50:6, 31–42
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N. G. Moshchevitin
Problem of behavior of an integral of a conditionally periodic function
Mat. Zametki, 1991, Volume 50:3, 97–106
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M. S. Nikol'skii
Viable parametrization of continuous many-valued mappings
Mat. Zametki, 1991, Volume 50:4, 84–87
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A. W. Niukkanen
A new approach to the theory of hypergeometric series and special functions of mathematical physics
Mat. Zametki, 1991, Volume 50:1, 65–73
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R. Oinarov, A. P. Stikharnyi
Boundedness and compactness criteria for a certain difference inclusion
Mat. Zametki, 1991, Volume 50:5, 54–60
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L. G. Orlovskii
Solvability of a certain inverse problem for a parabolic equation in a Hölder class
Mat. Zametki, 1991, Volume 50:3, 107–112
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D. G. Orlovskii
Meaning of evolution of a parameter in an abstract quasilinear parabolic equation
Mat. Zametki, 1991, Volume 50:2, 111–119
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K. Yu. Osipenko, see G. G. Magaril-Il'yaev
Mat. Zametki, 1991, Volume 50:6, 85–93
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A. I. Panasyuk
Accessibility sets of differential inclusions in a closed domain
Mat. Zametki, 1991, Volume 50:3, 113–121
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L. A. Pastur, V. A. Tkachenko
Geometry of the spectrum of the one-dimensional Schrödinger equation with a periodic complex-valued potential
Mat. Zametki, 1991, Volume 50:4, 88–95
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L. A. Pastur, see L. V. Bogachev
Mat. Zametki, 1991, Volume 50:6, 31–42
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A. P. Pavlov
Absolute summability of Fourier series of functions in the classes $\operatorname{Lip}(\alpha,p)$
Mat. Zametki, 1991, Volume 50:1, 74–83
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È. L. Pekarev
Extreme subsets of operator intervals
Mat. Zametki, 1991, Volume 50:4, 96–101
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E. E. Petrov
Cavalieri conditions for a $k$-dimensional radon transformation
Mat. Zametki, 1991, Volume 50:5, 61–68
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S. A. Pichugov
Estimates of norms of operators that are continuous in measure
Mat. Zametki, 1991, Volume 50:1, 146–148
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S. I. Pinchuk, Sh. I. Tsyganov
$CR$-straightening of real manifolds in $C^n$
Mat. Zametki, 1991, Volume 50:6, 116–121
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Yu. V. Pokornyi, I. G. Karelina
Nonlinear comparison theorems on graphs
Mat. Zametki, 1991, Volume 50:2, 155–157
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K. N. Ponomarev
Minimal solvable algebraic groups with a finite center
Mat. Zametki, 1991, Volume 50:2, 120–124
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A. V. Reztsov
Nonnegative trigonometric polynomials in many variables and cubature formulas of Gaussian type
Mat. Zametki, 1991, Volume 50:5, 69–74
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V. A. Rodin
Pointwise strong summability of multiple Fourier series
Mat. Zametki, 1991, Volume 50:1, 148–150
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V. V. Rybakov
Semantic admissibility criteria for deduction rules in $\mathbf{S4}$ and $\mathbf{Int}$
Mat. Zametki, 1991, Volume 50:1, 84–91
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V. V. Ryzhikov
Nonisomorphic full automorphism groups of nonseparable measure spaces
Mat. Zametki, 1991, Volume 50:4, 152–154
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E. A. Sagomonyan, see A. A. Lokshin
Mat. Zametki, 1991, Volume 50:6, 66–70
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I. V. Savel'ev
Simplicial complexes and ruled varieties
Mat. Zametki, 1991, Volume 50:1, 92–97
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G. Schmalz
Minimum principle for bounded holomorphic functions in many-dimensional domains
Mat. Zametki, 1991, Volume 50:4, 141–149
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V. L. Selivanov
Jumps of certain classes of $\Delta^0_2$-sets
Mat. Zametki, 1991, Volume 50:6, 122–125
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I. A. Semaev
Number of small solutions of a homogeneous linear congruence
Mat. Zametki, 1991, Volume 50:4, 102–107
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P. V. Semenov
Convex sections of graphs of continuous functions
Mat. Zametki, 1991, Volume 50:5, 75–80
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V. V. Sergeichuk
Symmetric representations of algebras with involution
Mat. Zametki, 1991, Volume 50:4, 108–113
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V. A. Sheikhman, see V. A. Smirnov
Mat. Zametki, 1991, Volume 50:5, 90–96
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A. M. Shelekhov
Analytic solutions of the functional equation $(xy)x=x(yx)$
Mat. Zametki, 1991, Volume 50:4, 132–140
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O. B. Sheremet
An integral estimate of distances between cross sections of two sets by planes
Mat. Zametki, 1991, Volume 50:5, 120–128
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M. A. Shereshevskii
Hausdorff dimension of a class of non-self-similar fractals
Mat. Zametki, 1991, Volume 50:5, 129–133
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V. V. Shevchishin
The Ock–Grawert principle for the extension of holomorphic line bundles with integrable curvature
Mat. Zametki, 1991, Volume 50:5, 109–119
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I. E. Shparlinskii
Estimates of Gaussian sums
Mat. Zametki, 1991, Volume 50:1, 122–130
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V. S. Shulman, see O. Yu. Borenshtein
Mat. Zametki, 1991, Volume 50:1, 139–141
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L. A. Shuster
A priori estimates of solutions of the Sturm–Liouville equation and the A. M. Molchanov criterion
Mat. Zametki, 1991, Volume 50:1, 131–138
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V. P. Shutyaev
Perturbation method for a weakly nonlinear hyperbolic first order problem
Mat. Zametki, 1991, Volume 50:5, 156–158
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M. M. Smirnov
Some examples of maximally complex cycles in $\mathbf P^n(\mathbf C)$
Mat. Zametki, 1991, Volume 50:3, 122–128
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M. M. Smirnov, E. M. Chirka
Polynomial convexity of some sets in $C^n$
Mat. Zametki, 1991, Volume 50:5, 81–89
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M. M. Smirnov
On the Kneser embedded edge theorem
Mat. Zametki, 1991, Volume 50:6, 145–147
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V. A. Smirnov, V. A. Sheikhman
Continuation of homogeneous functionals with a given convexity
Mat. Zametki, 1991, Volume 50:5, 90–96
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T. V. Sokolova
Behavior of nearly homothetic mappings
Mat. Zametki, 1991, Volume 50:4, 154–156
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T. A. Sribnaya, see V. M. Klimkin
Mat. Zametki, 1991, Volume 50:5, 43–47
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T. A. Sribnaya
A problem on the uniform continuity of a family of nonadditive set functions
Mat. Zametki, 1991, Volume 50:6, 126–130
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A. P. Stikharnyi, see R. O. Oinarov
Mat. Zametki, 1991, Volume 50:5, 54–60
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P. Yu. Subochev, see V. G. Danilov
Mat. Zametki, 1991, Volume 50:3, 152–154
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M. F. Sukhinin
Differentiability with respect to parameters in the presence of a priori estimates
Mat. Zametki, 1991, Volume 50:2, 125–130
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Ya. T. Sultanaev, see K. Kh. Boimatov
Mat. Zametki, 1991, Volume 50:6, 142–145
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M. N. Sviridenko
Weak convergence to processes connected with stable distributions
Mat. Zametki, 1991, Volume 50:1, 150–153
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L. V. Taikov
Improvement of an inequality of Hardy containing an estimate of the size of an intermediate derivative of a function
Mat. Zametki, 1991, Volume 50:4, 114–122
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I. A. Taimanov
Prym's theta-function and hierarchies of nonlinear equations
Mat. Zametki, 1991, Volume 50:1, 98–107
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O. A. Timoshin
Approximation of differential polynomials on classes of vector functions
Mat. Zametki, 1991, Volume 50:1, 153–155
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E. V. Tishkin
Snake theorems for monosplines with multiple nodes
Mat. Zametki, 1991, Volume 50:2, 131–141
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V. A. Tkachenko, see L. A. Pastur
Mat. Zametki, 1991, Volume 50:4, 88–95
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D. I. Tolev
Diophantine approximations involving primes near squares
Mat. Zametki, 1991, Volume 50:3, 129–134
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A. E. Tralle
Cyclic homology of certain topological spaces formal in the sense of Sullivan
Mat. Zametki, 1991, Volume 50:6, 131–141
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D. V. Treschev
Preservation of invariant manifolds of Hamiltonian systems in the presence of a perturbation
Mat. Zametki, 1991, Volume 50:4, 123–131
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M. I. Tsatsulin
Morse inequalities for almost-periodic functions
Mat. Zametki, 1991, Volume 50:2, 146–151
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Sh. I. Tsyganov, see S. I. Pinchuk
Mat. Zametki, 1991, Volume 50:6, 116–121
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V. V. Varlamov
Stabilization of energy for a wave equation with memory
Mat. Zametki, 1991, Volume 50:4, 38–46
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G. M. Vartanyan
Rate of approximation of functions in the Hardy–Orlicz classes $H_{\varphi}$
Mat. Zametki, 1991, Volume 50:5, 23–31
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M. E. Vazquez-Abal, see C. Dodson
Mat. Zametki, 1991, Volume 50:3, 27–37
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O. V. Verbitskii
Optimal algorithms for $\mathbf{co}\mathscr{NP}$-sets and the $\mathscr{EXP}\stackrel{?}{=}\mathscr{NEXP}$ problem
Mat. Zametki, 1991, Volume 50:2, 37–46
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A. A. Yadchenko
Spectra of $p$-elements of finite $p$-solvable complex linear groups
Mat. Zametki, 1991, Volume 50:3, 143–151
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V. A. Yurko
Inverse problem for integrodifferential operators
Mat. Zametki, 1991, Volume 50:5, 134–146
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M. I. Zaslavskaya, see S. A. Grigoryan
Mat. Zametki, 1991, Volume 50:3, 20–26
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P. A. Zusmanovich
A Lie algebra that can be written as a sum of two nilpotent subalgebras is solvable
Mat. Zametki, 1991, Volume 50:3, 38–43
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