Geodesic

Sommaire du Fascicule no. 1

A certain property of the solutions of the singular Cauchy problem for the Euler-Darboux-Poisson equation
p. 3-7
The uniqueness of the determination of the coefficient and right-hand side of the transport equation
p. 8-18
The correctness of an optimal control problem with an integral quadratic efficiency criterion
p. 19-26
Some boundary value problems for a certain class of equations of mixed type in the three-dimensional case
p. 27-32
Boundary value problems for a three-dimensional equation of mixed type
p. 33-37
The solvability of the Holmgren problem for a certain degenerate elliptic equation
p. 38-46
A certain inverse problem for the Euler--Darboux--Poisson equation
p. 47-59
A theorem on the uniqueness and membership in the class $W_2^1$ of the classical solution of a mixed problem for a nonselfadjoint hyperbolic equation in an arbitrary cylinder
p. 60-65
Inverse theorems on the smoothness of potentials
p. 66-74
Certain boundary value problems for mixed-parabolic equations
p. 75-84
Sufficient optimality conditions for problems with second order differential equations of elliptic type in the presence of phase constraints
p. 85-99
The strong solvability of a certain boundary value problem for an equation of mixed type with two parallel lines of degeneracy
p. 100-107
Three-dimensional generalized holomorphic vectors
p. 108-115
Boundary value problems for degenerate multidimensional hyperbolic equations
p. 116-126
Connected operators and boundary value problems of hyperbolic and degenerate hyperbolic partial differential equations
p. 127-136
A certain class of singular integral equations with a shift of non-Carleman type
p. 137-150
The Dirichlet problem for the Tricomi equation in a rectangle
p. 151-160
The solvability ``in the small'' of the inverse problem of logarithmic potential
p. 161-169
Some questions on the distribution of the critical points of harmonic polynomials in three variables
p. 170-175
A certain problem of A.\,V.~Bicadze for an equation of mixed type with a closed curve of degeneracy
p. 176-179
On the question of the explicit integration of second order linear partial differential equations
p. 180-182
A certain fourth order equation of composite type
p. 183-185
The critical points of the Green's function for the Laplace equation of close domains
p. 186-187
The ill-posedness of the multidimensional analogue of the Darboux problem for a hyperbolic equation with degeneracy
p. 188-191
A certain mixed problem for degenerate elliptic equations
p. 192-195
On the inverse problem of logarithmic potential
p. 196-199

Sommaire du Fascicule no. 2

The averaging principle and almost periodic solutions of systems of functional-differential equations of neutral type
p. 211-221
A criterion for a certain multidimensional discrimination problem
p. 222-226
Conditionally stable singularly perturbed systems with singularities in the boundary conditons
p. 227-238
Individual stability of systems of linear differential equations
p. 239-245
A criterion for small change in the direction of the solutions for $n$th order linear differential equations
p. 246-254
The oscillatory properties of the solutions of quasilinear and linear second order differential equations in Hilbert space and in Euclidean space
p. 255-261
A certain differential equation with algebraic integrals
p. 262-267
The continuability, uniqueness and continuous dependence on a parameter of the solutions of equations of neutral type
p. 268-279
The construction of periodic solutions of certain linear and quasilinear equations
p. 280-286
Multiplication theorems for the solutions of the $m$th order generalized Bessel differential equation
p. 287-293
Difference schemes for nonlinear hyperbolic equations.~II
p. 294-308
A certain mixed problem for a system of equations with piecewise constant coefficients
p. 309-322
The solution of a certain boundary value problem of the theory of a rectangular waveguide that is excited by an active UHF element
p. 323-331
The stabilization of functions at infinity to solutions of differential equations
p. 332-357
An application of Sobolev's method to the study of the connection between the spectrum of a second order elliptic differential operator and the geometry of a manifold without boundary
p. 358-365
A boundary value problem with boundary conditions of conjugation type
p. 366-370
Oscillating real solutions of a particular case of Painlev\'e's second equation
p. 371-372
On the theory of Painlev\'e's equations
p. 373-376
The nature of the movable singular points of a certain system of differential equations
p. 377-379
The construction of the solutions of a system of three differential equations under strong dynamic perturbations in a particular case
p. 380-381
Perturbations by compact operators of pseudodifferential equations in spaces of the type $B_{p,k}(R^n)$
p. 382-384
On sufficient optimality conditions
p. 385-387
A generalization of a theorem of H. Wittich
p. 388-389
The maximal number of limit cycles of the system $\dot{y}=-x$, $\dot{x}=y-\sum_{i=0}^2a_i x^{2i+1}$ is equal to two
p. 390-391

Sommaire du Fascicule no. 3

Die Vergleichsmethode in der Dynamik der Systeme.~II
p. 403-417
A certain method for the control of nonlinear systems of differential equations
p. 418-428
Stability of the exponents and structurally stable properties of $n$th order linear differential equations
p. 429-444
Certain aspects of the Riemann problem for the case of an equation with four singular points
p. 445-455
Estimates of the solutions of ordinary differential equations with a small parameter multiplying the highest derivative
p. 456-461
The oscillatory solutions of a second order linear homogeneous differential equation with retarded argument
p. 462-469
The study by the generalized Briot--Bouquet method of the properties of solutions near singular initial values of a nonautonomous differential system
p. 470-483
The number of solutions of the two-point boundary value problem for a second order equation with discontinuous right-hand side
p. 484-497
Elliptic equations in $R^n$
p. 498-504
The existence of asymptotic solutions of a certain class of partial differential equations
p. 505-511
The Cauchy problem for hyperbolic equations with degeneracy of type on the initial line
p. 512-522
On a boundary value problem of Riemann--Hilbert type
p. 523-532
Functionally invariant solutions of second order quasilinear partial differential equations
p. 533-540
Poles for the scattering operator and resonance states for Maxwell's system of equations
p. 541-555
The Cauchy problem for the Korteweg--de Vries equation
p. 556-561
On the approximate solution of singular integrodifferential equations. II.~Nonlinear equations
p. 562-571
The approximate analytic solution of certain integral equations of the first kind
p. 572-576
A finite difference method for the solution of a linear and a quasilinear elliptic equation with two lines of degeneracy
p. 577-580
The stochastic stability of Ljapunov's characteristic exponents
p. 581-583
\"Uber die Steuerung der Drehbewegung eines Festk\"orpers
p. 584-585

Sommaire du Fascicule no. 4

On the problem of the optimization of a controllable system in a class of a generalized actions
p. 595-603
Periodic oscillations with large amplitude
p. 604-610
Regularly dichotomic differential equations in a Banach space
p. 611-631
On a problem of N. P. Erugin
p. 632-638
The asymptotic behavior of the solution of a system of two first order nonlinear differential equations
p. 639-644
A study of the relay sampled-data systems by the method of point mappings
p. 645-658
Connectedness of certain sets of linear systems with integral separation
p. 659-664
Singular solutions in optimization problems for dynamical systems with a quadratic quality test
p. 665-671
The evasion problem for a certain class of nonlinar differential games
p. 672-677
The vanishing of the periodic solutions of quasihomogeneous systems that have only simple exceptional sets
p. 678-686
The unique solvability of a certain linear two-point boundary value problem
p. 687-693
Difference schemes for a nonlinear parabolic equation that is not solved for the highest derivatives
p. 694-707
The extremum principle for the generalized Neumann--Tricomi problem
p. 708-712
Estimates for functions with a finite O.\,V.~Besov seminorm
p. 713-717
A boundary value problem for a second order operator-differential equation of the type of the Tricomi equation
p. 718-726
Time-optimality problems in the theory of the optimal control of transfer processes
p. 727-740
On the theory of the approximate solution of a boundary value problem for a certain class of third order differential equations
p. 741-744
The stability of the solution of a certain nonlinear integral equation on a compact set
p. 745-748
Necessary optimality conditions for singular extremals
p. 749-752
On the investigation of penalty functions with continuous parameter
p. 753-754
A certain dense set in a space of linear systems
p. 755-757
Uniqueness of the $O$-curve along a direction that is analogous to the exceptional one
p. 758-759
A certain property of the solutions of a second order linear differential equation of unstable type with retarded argument
p. 760-761

Sommaire du Fascicule no. 5

The Riemann problem.~I
p. 771-781
Half periods of the solutions of two-dimensional linear systems
p. 782-797
Asymptotic properties of the solutions of a certain system of two differential equations
p. 798-804
Structure of the boundary of an asymptotically stable integral set of a periodic system of two equations
p. 805-810
Strong isochrony of the center. Periods of limit cycles of the Lienard system
p. 811-819
The exponential stability of an invariant torus of a dynamical system
p. 820-834
A certain theorem of B.\,P.~Demidovi{\v{c}}
p. 835-840
Stability of systems with a countable number of transformations of the argument
p. 841-849
Construction of the Green's function for a rectangular domain (of a regular rectangular wave guide) by means of Bessel functions
p. 850-857
The resolvent of a degenerate operator in a Banach space
p. 858-868
The stabilization of the solution of the Cauchy problem for a higher order parabolic equation with one space variable
p. 869-882
Decay of the oscillations of the solutions of a hyperbolic equation
p. 883-888
Difference schemes for multidimensional quasilinear parabolic equations
p. 889-899
The approximate solution of systems of nonlinear equations
p. 900-908
The stability of difference systems with respect to part of the variables
p. 909-913
Manifolds of $0$-curves of multidimensional systems
p. 914-917
A minimal polynomial base of the affine invariants of a quadratic system
p. 918-920
Approximate methods for the solution of abstract differential equations in a Banach space
p. 921-923
The completeness, in analytic spaces in the disc, of the systems of eigenfunctions of linear ordinary differential operators
p. 924-927
Control of the rotational motion of a rigid body under conditions of indeterminacy
p. 928-929
The estimation from below of orders of separation in the quasianalytic case
p. 930-933
Difference schemes of the sixth order of accuracy for a Poisson equation of an arbitrary number of dimensions
p. 934-936
A criterion for the simple vanishing of the periodic solution of a quasihomogeneous system
p. 937-939
Solution of the Cauchy problem for certain systems of linear partial differential equations by means of multiplicative integrals
p. 940-941
Alekse{\v\i} Georgievi{\v{c}} Sve{\v s}nikov (on the occasion of his fiftieth birthday)
p. 942-945

Sommaire du Fascicule no. 6

A certain qualitative characterization of the class of reducible systems with quasi-periodic coefficients
p. 955-960
Behavior of the norm of the integral matrix of a certain two-dimensional system of differential equations in the neighborhood of a singular point of the system
p. 961-974
On the theory of semi-explicit differential equations with retarded argument
p. 975-985
A boundary value problem for a nonlinear differential equation of neutral type
p. 986-996
Certain properties of the smaller exponent when there are Perron perturbations
p. 997-1004
Ljapunov stability in discontinuous dynamical systems
p. 1005-1012
Asymptotic behavior of the solutions of certain problems for a certain class of quasilinear systems of ordinary differential equations with a small parameter multiplying the derivative
p. 1013-1022
On the question of stability with respect to part of the variables
p. 1023-1029
The asymptotic behavior of the solutions of singularly perturbed equations of elliptic type in a rectangular domain
p. 1030-1041
Integral estimates of the fractional derivatives of the solutions of linear equations of elliptic type in the $L_2$ metric.~I
p. 1042-1053
The roots of the function $Ai'(z)-\sigma Ai(z)$
p. 1054-1077
The behavior of the solutions of a certain parabolic equation in the neighborhood of the initial plane
p. 1078-1090
The asymptotic behavior of the solutions of finite difference equations. II.~Regular equations
p. 1091-1107
The spectrum of a certain class of linear integral equations with two parameters
p. 1108-1117
Linear equations
p. 1118-1127
Solutions of linear systems in generalized functions
p. 1128-1130
On the problem of the analytic construction of optimal regulators for systems with periodic coefficients
p. 1131-1132
A certain new method for the approximate integration of systems of differential equations
p. 1133-1135
On Hartman's comparison theorem for second order linear equations
p. 1136-1137
A certain counterexample in the theory of positive solutions
On a homotopy invariant
p. 1139-1140
Some spectral properties of an operator that is akin to a differential operator
p. 1141-1143
Analytic properties of the solutions of a certain class of third order differential equations
p. 1144-1146

Sommaire du Fascicule no. 7

An existence theorem for a differential inclusion with variable lag
p. 1155-1158
The extension of the class of conditionally stable singularly perturbed systems that admit application of the method of boundary functions
p. 1159-1174
Investigation of a continuum of solutions of the Cauchy problem in terms of a finite number of their approximations
p. 1175-1179
Ordinary differential equations with a discrete symmetry group
p. 1180-1189
The nontriviality of certain classes of functions, and the solvability of nonlinear ordinary differential equations of infinite order.~II
p. 1190-1200
A multipoint boundary value problem for nonlinear differential equations with deviating argument that are not solved for the derivative
p. 1201-1205
Controllability of a linear nonstationary system
p. 1206-1216
Completeness, and the property of being a basis, of the solutions of a certain differential equation in analytic spaces
p. 1217-1224
Differential systems that are equivalent with respect to imbeddability
p. 1225-1231
The asymptotic behavior of oscillating solutions of second order ordinary differential equations
p. 1232-1245
The comparability of the motions of dynamical systems with regard to the nature of their recurrence
p. 1246-1255
The existence of statistical solutions of Vlasov's system of equations
p. 1256-1268
The convergence and rate of convergence of the Galerkin method for abstract evolution equations
p. 1269-1277
Discontinuous solutions of mixed problems for almost linear hyperbolic systems in the plane
p. 1278-1292
Fundamental solutions of parabolic systems with discontinuous coefficients, and their applications to boundary value problems.~II
p. 1293-1303
Sharp estimates of the solutions of two-layer difference schemes
p. 1304-1315
The fundamental solutions and stabilization of the solution to the Cauchy problem for a certain class of degenerate parabolic equations
p. 1316-1330
Locally invariant sets of three-dimensional autonomous systems
p. 1331-1334
Coercive solvability of general boundary value problems for second order elliptic differential equations in a Banach space.~II
p. 1335-1337
The order of an algebraic integral curve of a differential equation
The global trajectories of a certain dynamical system
p. 1339-1340
The expansion in root vectors of abstract differential operators
p. 1341-1342
The dependence of a nonlocal solution of the Cauchy problem on a parameter
p. 1343-1346

Sommaire du Fascicule no. 8

The controllability of linear functional-differential systems
p. 1355-1360
Local uniqueness and existence of the solution of boundary value problems
p. 1361-1365
The topological equivalence of differential equations
p. 1366-1374
The topological equivalence of structurally stable three-dimensional systems without periodic trajectories
p. 1375-1387
A certain method of investigating the periodic solutions of systems with a small parameter multiplying the derivatives
p. 1388-1395
The completeness in the space of analytic functions of a system of functions that is generated by the solutions of an $n$th order differential equation
p. 1396-1408
Occurrence of invariant sets in the neighborhood of the equilibrium position
p. 1409-1415
Poisson stability in dispersive dynamical systems
p. 1416-1426
The power asymptotic behavior of a nonautonomous homogeneous and quasihomogeneous system
p. 1427-1436
The mutual imbedding of a weighted closure of the compactly supported functions and a weighted Sobolev space of functions with zero values on the boundary of the domain
p. 1437-1452
The uniqueness of the solution of the Cauchy problem with data on a segment of the time axis for a degenerate parabolic equation
p. 1453-1459
The oscillation of the solutions of nonlinear difference equations
p. 1460-1473
An investigation of the neighborhood of an invariant toroidal manifold of a system of difference equations
p. 1474-1484
The support principle in discrete processes
p. 1485-1496
The measure of nonregularity of quasitriangular systems
p. 1497-1500
A certain generalization of N.\,N.~Krasovski{\v\i}'s condition for the controllability of nonstationary systems
p. 1501-1502
Autooscillations and stability of a second order piecewise linear system with lag
p. 1503-1505
Singularity of an orbit that contains a singular point
p. 1506-1507
A certain class of third order systems without movable critical points
p. 1508-1511
A connection between controllability and stability in control problems
p. 1512-1515
Integration in geschlossener Form und asymptotisches Verhalten von L\"osungen linearer gew\"ohnlicher Differentialgleichungen vierter Ordnung
p. 1516-1517
The use of group invariance in branching theory
p. 1518-1521
The solvability of the Reissner equations of a circular plane membrane for a certain case of the load
p. 1522-1525
Admissibility of certain function spaces and dichotomy of the solutions for equations with constant coefficients
p. 1526-1528

Sommaire du Fascicule no. 9

The stability in the large of the zero solution of a certain system of two differential equations
p. 1539-1549
A certain class of pseudodifferential operators with deviating argument on the torus
p. 1550-1557
The existence and uniqueness of the solution of a certain equation of neutral type in the singular case
p. 1558-1567
The rate of growth of the solutions of algebraic differential equations in angular domains
p. 1568-1574
Controllability in the large of linear periodic systems in the presence of constraints on the controls
p. 1575-1583
Optimal control of certain nonlinear systems with a small parameter
p. 1584-1594
Boundary value problems for the operator Sturm--Liouville equation with a complete system of eigen- and associated functions
p. 1595-1600
A certain class of nonlinear boundary value problems
p. 1601-1606
The periodic solutions of linear equations in differential forms
p. 1607-1619
Difference schemes for quasilinear nonstationary problems with mixed derivatives
p. 1620-1625
Approximate iterations for a partial differential-functional equation of hyperbolic type in a Banach space
p. 1626-1640
Boundary value problems for the Laplace equation
p. 1641-1646
A certain inverse problem for an equation of parabolic type
p. 1647-1651
Estimations of the $L_p$-norms of mesh functions in the limiting cases
p. 1652-1663
Estimation of the derivative of a function in terms of derivatives of higher order; application to the solvability of the first homogeneous boundary value problem for a linear nonregular elliptic equation
p. 1664-1677
A boundary value problem with shift for a fourth order equation of mixed-composite type
p. 1678-1686
A problem with nonlocal boundary conditions for second order hyperbolic partial operator-differential equations
p. 1687-1693
The nonoscillatory properties of systems of linear difference equations
p. 1694-1697
On the problem of the synthesis of systems on a finite time interval
p. 1698-1701
Tests for the existence of limit cycles for systems of limit cycles for systems of the form $\dot{x}=y$, $\dot{y}=-\sum_{k=0}^n f_k(x)y^k$
p. 1702-1704
A certain boundary value problem of the biharmonic equation for the half-plane
p. 1705-1708
The branching of the solutions of the Cauchy problem for linear differential equations
p. 1709-1712
Letter to the editors: ``Quasiregular synthesis'' (Differencial'nye Uravnenija \textbf{10} (1974), 598--605)
Letter to the editors: ``The construction of periodic solutions of certain linear and quasilinear equations'' (Differencial'nye Uravnenija \textbf{11} (1975), 280--286)
Letter to the editors: ``The solvability of the Dirichlet problem for an elliptic equation of order $2l$ in the class $W_2^{(2l)}$'' (Differencial'nye Uravnenija 9 (1973), 2048--2051)

Sommaire du Fascicule no. 10

A linear differential evasion game with integral constraints on the controls
p. 1723-1731
A certain approximation of a differential game in mixed strategies
p. 1732-1737
The qualitative investigation of a second order nonautonomous nonlinear equation
p. 1738-1753
The resemblance between conditionally stable singularly perturbed systems and singularly perturbed systems with a zero characteristic number
p. 1754-1764
Necessary optimality conditions in a problem with a movable right hand endpoint of the trajectory
p. 1765-1773
Dependence on a parameter of the rotation number of a differential equation defined on the torus
p. 1774-1779
\"Uber die Erhaltung des Vorzeichens der Wronskischen Determinante des Fundamentalsystems, der Cauchyschen Funktion und der Greenschen Funktion des Zweipunkt-Randwertproblems f\"ur eine Gleichung mit retardiertem Argument
p. 1780-1789
The minimal number of inputs and switching points of boundary value problems with control
p. 1790-1794
The hyperbolicity of a basic family for Levinson's equation
p. 1795-1800
Second solutions of multipoint boundary value problems with convex nonlinearities
p. 1801-1810
The reduction theorem for closed trajectories
p. 1811-1818
Approach-deviation problems in properly linear systems
p. 1819-1826
The existence of separatrix surfaces for systems in standard form
p. 1827-1831
A certain estimate of the domain of asymptotic stability for autonomous systems of equations
p. 1832-1837
The maximum principle for differential inclusions
p. 1838-1842
Existence theorems for two classes of nonlinear integral equations
p. 1843-1852
Boundary value problems for equations of mixed type with characteristics that cross the line of degeneracy twice.~I
p. 1853-1861
Analytic solutions of equations on a Lie semigroup
p. 1862-1869
Problems of electrostatics in an inhomogeneous medium. The case of a thin dielectric with a large dielectric constant.~II
p. 1870-1878
On the question of the expandability of functions in an absolutely and uniformly convergent series of eigenfunctions of the Laplace operator
p. 1879-1887
A remark on the estimation of the domain of attraction of the zero solution of certain nonlinear systems
p. 1888-1889
$\lambda $-zones of instability for Hill's differential equation
p. 1890-1892
Construction of systems that have prescribed integral surfaces
p. 1893-1894
On the abstract Cauchy problem for differential equations with deviating argument. Stability of the solutions
p. 1895-1898
Linear systems with periodic coefficients
p. 1899-1901
Asymptotic behavior of the solutions of linear differential equations with constant coefficients
p. 1902-1904
Рецензия на книгу Д.\,К.~Лика и Ю.\,А.~Рябова «Методы итераций и мажорирующие уравнения Ляпунова

Sommaire du Fascicule no. 11

Singular perturbations in a linear control problem with a quadratic functional
p. 1915-1921
The structure and periodicity of the solutions of a certain two-dimensional system of differential equations
p. 1922-1934
Limit cycles and algebraic integrals in the case of a center
p. 1935-1941
Lacunae in the spectrum of a fourth order differenetial operator with periodic coefficients
p. 1942-1948
The stability of the rotation number of a doubly periodic differential equation
p. 1949-1955
The asymptotic behavior of the solution of the general boundary value problem for singularly perturbed systems of ordinary differential equations of conditionally stable type
p. 1956-1966
Controllability of linear autonomous systems in the presence of constraints on the control
p. 1967-1979
Fractional powers of degenerate differential operators
p. 1980-1989
Existence of Ljapunov--Krasovski{\v\i} functions with homogeneous derivatives, by virtue of the equation
p. 1990-1995
The Cauchy problem for the equation $Ax'(t)+Bx(t)=f(t)$
p. 1996-2010
The topological structure of a neighborhood of a singular point of a differential equation
p. 2011-2018
The boundedness of the infinitely continuable solutions of a system of two differential equations with quadratic right hand sides
p. 2019-2026
Completely integrable equations in variational derivatives
p. 2027-2039
The generalized Neumann--Tricomi problem
p. 2040-2051
The solution of certain boundary value problems of the theory of harmonic functions
p. 2052-2066
Strong and weak extension of differential operators
p. 2067-2082
Generation of a structurally stable, doubly asymptotic trajectory in a system with a slowly changing variable
p. 2083-2085
An existence and uniqueness theorem for the solution of linear differential-difference equations with deviating argument
p. 2086-2088
The oscillation on a finite time interval of the projections of the solutions of systems of ordinary differential equations
p. 2089-2091
A certain property of the oscillating solutions of nonlinear second order equations
p. 2092-2093
A certain class of third order systems with a single-valued solution
p. 2094-2096
The stochastic stability of the characteristic exponents of the variational equations of smooth dynamical systems
p. 2097-2099
The existence of a solution of a certain nonlinear boundary value problem
p. 2100-2101
Solution of the problem of the center and focus for a Li\'enard system with polynomial coefficients
p. 2102-2104
Михаил Алексеевич Лаврентьев (к~75-летию со дня рождения)

Sommaire du Fascicule no. 12

Periodic solutions under steadily acting perturbations
p. 2115-2120
The two-point boundary value problem
p. 2121-2133
The ``most economical'' motion of a segment in the plane
p. 2134-2142
The canonical forms of linear functional-differential equations
p. 2143-2153
The nonlocal generation of limit cycles from a loop of the separatrix of an equation for which the degree of structural instability of the corresponding dynamical system is greater than one
p. 2154-2161
The uniqueness of the solution of a two-point difference boundary value problem
p. 2162-2176
Conditions for a center for equations $y'=(Q_1+Q_n)/(P_1+P_n)$
p. 2177-2182
The Hamilton--Jacobi method, and the problem of integrating ordinary differential equations
p. 2183-2188
Sufficient conditions for the solvability of a certain nonlinear boundary value problem on the half-axis
p. 2189-2195
The correctness of the Cauchy problem for certain partial differential equations with shifted argument
p. 2196-2204
The stabilization of the solution of the Cauchy problem for parabolic equations with coefficients that are almost periodic in the space variables
p. 2205-2209
The uniqueness of the solution of the Goursat problem for a quasilinear hyperbolic system
p. 2210-2219
Expansion in the eigenfunctions of the second boundary value problem of elasticity theory, and the substantiation of Fourier's method
p. 2220-2230
The Noetherianness of differential operators in $R^n$
p. 2231-2235
The stability of the solution of the Cauchy problem for a parabolic equation
p. 2236-2241
The solution by the regularization method of operator equations of the first kind with accretive operators in a Banach space
p. 2242-2248
The convergence of the collocation method in an eigenvalue problem
p. 2249-2260
Grid approximation of solutions of degenerate equations belonging to a weight space
p. 2261-2268
Theory of numerical integration of differential equations
p. 2269-2270
The stability of an invariant set for difference equations
p. 2271-2272
Boundary value problems for equations of mixed type with characteristics that cross the line of degeneracy twice.~II
p. 2273-2275
A certain dense set in the space of smooth dynamical systems
p. 2276-2277
On the question of equivalent transformations of linear inhomogeneous difference equations with constant coefficients
p. 2278-2280
The movable essentially singular points of a first order differential equation
p. 2281-2282
The solvability of a certain integral equation with an initial condition
p. 2283-2285
Estimation of the multiplicity of the spectrum of a selfadjoint differential operator
p. 2286-2287