## Found 179 Documents (Results 1–100)

100
MathJax

### On the stability of essentially nonlinear systems. (Russian)Zbl 0637.34042

Reviewer: S.Kono
MSC:  34D20 34A34

### Method of standard equations (WKB-method) for a class of nonlinear second order ordinary differential equations. (Russian)Zbl 0635.34043

MSC:  34E20 34C10 34A34

### Solvability of a two-point boundary value problem for systems of second order nonlinear ordinary differential equations. (Russian. English summary)Zbl 0623.34018

MSC:  34B10 34A34

### Les équations différentielles du second ordre à points critiques fixes. III: Les intégrales de l’équation A3 de Painlevé. (French)Zbl 0613.34003

MSC:  34M55 34A25

### A boundary value problem with parameters for differential equations of superneutral type. (Russian)Zbl 0605.34054

Reviewer: J.Appell
MSC:  34K10 34K99 34B99

### On the integrability of the Abel differential equation in parametric form. (Russian)Zbl 0605.34003

MSC:  34A12 34C05

### Eine Anwendung der Bedingungen der Integrierbarkeit einer Klasse der linearen Differentialgleichungen zweiter Ordnung. (An application of the integrability condition of a class of linear second order differential equations). (German)Zbl 0604.34004

MSC:  34A30 34C20

### On two-sided solutions of an equation of motion for charged particles with delay. (English)Zbl 0603.45016

MSC:  45J05 83C50 78A35

### Attractivity theorems for second order nonlinear differential equations. (English)Zbl 0601.34039

MSC:  34D15 34A34 34E05

MSC:  34L99
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### On isochronism of second order Hamiltonian differential systems with polynomials of third degree. (Russian)Zbl 0601.34010

MSC:  34A99 70H05

### On the oscillation of second order differential inequalities. (English)Zbl 0601.34007

Rad. 74, Odjeljenje Prir. Mat. Nauka 22, 21-31 (1983).
MSC:  34A40 34C10

MSC:  34M55

### Attractivity theorems for second order nonlinear differential equations. (English)Zbl 0599.34073

Reviewer: B.Shcherbakov
MSC:  34E05 34A34

MSC:  34C20
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MSC:  34L99
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MSC:  34L99
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### On admissible boundary conditions at an irregular singular point for systems of linear ordinary differential equations. (English)Zbl 0599.34017

MSC:  34B05 34C05 34A30
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MSC:  34A05
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### Application de la théorie des semi-groupes non linéaires pour résoudre $$\partial u/\partial t+\max \,{\mathcal A}_ iu=f$$. (Application of the theory of nonlinear semigroups to the solution on $$\partial u/\partial t+\max \,{\mathcal A}_ iu=f)$$. (French)Zbl 0598.47073

Publ. Math. Fac. Sci. Besançon, Anal. Non Linéaire Années 1982-1983, No. 7, Exp. No. 6, 28 p. (1983).

### Ground states of quasiperiodic operators. (English. Russian original)Zbl 0598.35034

Sov. Math., Dokl. 28, 114-119 (1983); translation from Dokl. Akad. Nauk SSSR 271, 532-536 (1983).
MSC:  35J15 35J10 35P05

### On the uniform boundedness of the solutions of a second-order differential equation. (Russian)Zbl 0597.34030

Boundary value problems, Interuniv. Collect. sci. Works, Perm’ 1983, 50-52 (1983).
Reviewer: G.Stiller
MSC:  34C11

### On a singular point of the ”center” type for a certain nonlinear differential equation. (Bulgarian. English, Russian summaries)Zbl 0597.34025

MSC:  34C05 37-XX

MSC:  34C20

### The singular solutions of the generalized poly-axially symmetric Helmholtz equations. (English)Zbl 0594.35027

Reviewer: R.Leis
MSC:  35J05 35A08 35C99

### On second-order differential equation of limit-circle type. (English)Zbl 0592.34023

Reviewer: C.Chicone
MSC:  34C11 34B20

### On a condition for localization of the spectrum of the Sturm-Liouville problem on the positive semi-axis. (Russian)Zbl 0591.34020

Reviewer: D.Herceg
MSC:  34L99 47E05

### On the product solutions of Sturm-Liouville equations with many parameters in a space of the type $$L_ 2$$. (English)Zbl 0589.34019

Reviewer: B.D.Sleeman
MSC:  34L99
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### On the question of optimal control over coefficients of parabolic equations. (Russian)Zbl 0587.49007

Questions of stability and optimization of dynamical systems, Collect. Artic., Irkutsk 1983, 64-74 (1983).
Reviewer: U.Raitums

### On an analogue of the N. N. Bogolyubov averaging principle for some nonlinear boundary value problems. (Russian. English summary)Zbl 0586.34014

Dokl., Semin. Inst. Prikl. Mat. 17, 50-55 (1983).
Reviewer: A.Halanay
MSC:  34B15 34C29

### Existence and determination of super-harmonic synchronizations as solution of quasi-linear physical system. (English)Zbl 0584.34024

Bull. Fac. Sci., Sect. A, Assiut Univ. 12, 169-175 (1983).
MSC:  34C10 34A34

### On the synchronization of an oscillatory system. (English)Zbl 0584.34023

Bull. Fac. Sci., Sect. A, Assiut Univ. 12, 109-126 (1983).
MSC:  34C10 34A30

MSC:  34A30
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### A numerical method for a parabolic bang-bang problem. (English)Zbl 0583.49022

Reviewer: U.Mackenroth
MSC:  49M25 65K10 49K30 35B37 35K20 49K20 65N06 65N22 93B40 93C20

### Oscillation properties of second order differential equations with retarded argument and rapidly increasing highest coefficient. (Russian)Zbl 0582.34068

Issled. Integro-Differ. Uravn. 16, 216-225 (1983).
Reviewer: G.Stiller
MSC:  34E05 34C10 34C11

### Integral oscillation criteria for the solutions of linear and nonlinear second-order differential equations. (Russian)Zbl 0582.34044

Issled. Integro-Differ. Uravn. 16, 205-209 (1983).

### The second boundary value problem for a mixed-parabolic equation with non-local initial conditions. II. (Bulgarian. French, Russian summaries)Zbl 0578.35038

MSC:  35K20 35K15 35A05 35M99

### The second boundary value problem for a mixed-parabolic equation with two perpendicular degeneration lines and non-local initial conditions. I. (Bulgarian. French, Russian summaries)Zbl 0578.35037

MSC:  35K20 35K15 35A05 35M99

### Investigations on an anisotropic strict extremum principle for elliptic- parabolic equations of second order. (English)Zbl 0576.35088

MSC:  35M99 35B50 35J10
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### On correct boundary value problems for nonlinear equations of mixed type. (Russian)Zbl 0575.35065

Application of methods of functional analysis to nonclassical equations of mathematical physics, Collect. sci. Works, Novosibirsk 1983, 142-147 (1983).
Reviewer: N.A.Lar’kin
MSC:  35M99 35D05 35B45

### Description of all second order differential equations with functionally invariant solutions. (Russian)Zbl 0575.34009

Differential equations and some of their applications, Interuniv. Collect., Tyumen’ 1983, 48-57 (1983).
Reviewer: O.Dumbrajs
MSC:  34A99

### Construction of the Cauchy function for a quasidifferential equation of second order with piecewise variable coefficients. (Russian)Zbl 0573.34008

Vestn. L’vov. Politekh. Inst. 172, 122-124 (1983).
Reviewer: G.Stiller
MSC:  34A12

### Solution of linear differential equations by means of integral continued fractions. (Russian)Zbl 0573.34006

Vestn. L’vov. Politekh. Inst. 172, 102-104 (1983).
Reviewer: G.Stiller
MSC:  34A12 34A30 40A15

### Half-range completeness for the Fokker-Planck equation. I. (English)Zbl 0571.35088

MSC:  35Q99 35K20 82C70
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### On the boundary value problem for a nonlinear differential equation of neutral type. (Russian)Zbl 0571.34053

Investigations in some questions of the constructive theory of functions and differential equations, Thematic Collect. sci. Works, Baku 1983, 150-153 (1983).
Reviewer: B.Šehter
MSC:  34K10 34A12 34B10

### Equivalence between the boundary value problem for a nonlinear differential equation and the problem for the corresponding integro- differential equation. (Bulgarian. French, Russian summaries)Zbl 0568.34012

Reviewer: L.Hacia

### On two-sided solutions of the equation of motion of charged particles with delay. (Russian)Zbl 0566.45014

Reviewer: V.Petrův
MSC:  45J05 83C50 78A35

### Some aspects of the identification of continuous vibrating systems. (English)Zbl 0565.93016

Control of distributed parameter systems, Proc. 3rd IFAC Symp., Toulouse 1982, 527-534 (1983).

### Asymptotic solution of a certain singularly perturbed boundary value problem. (Russian)Zbl 0565.34049

MSC:  34E05 34B15

### On traces of solutions of a semi-linear partial differential equation of elliptic type. (English)Zbl 0564.35032

Reviewer: R.Finn
MSC:  35J25 35D10
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### Method of spline-collocation. (Russian)Zbl 0563.65057

Current problems of numerical and applied mathematics, Collect. Artic., Novosibirsk 1983, 82-86 (1983).
Reviewer: Z.Jackiewicz

### Introduction à l’analyse numérique des équations aux dérivées partielles. (French)Zbl 0561.65069

Collection Mathématiques Appliquées pour la Maîtrise. Paris etc.: Masson. 224 p. (1983).

### Limiting behavior of strongly damped nonlinear wave equations. (English)Zbl 0561.35049

Reviewer: T.Ruggeri
MSC:  35L70 34G20 35A05 35B30
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### Some remarks on the order of an entire function associated with a second order differential equation. (English)Zbl 0559.34022

Ordinary differential equations and operators, to F. V. Atkinson, Proc. Symp., Dundee/Scotl. 1982, Lect. Notes Math. 1032, 384-389 (1983).
Reviewer: J.O.C.Ezeilo
MSC:  34L99 47E05

### Solvability of the Cauchy problem for an almost linear hyperbolic equation with functional and algebraic nonlinearities. (Russian. English summary)Zbl 0558.35039

MSC:  35L70 35A05 35A07 47D03 35B45

### The second boundary value problem for a mixed-parabolic equation with non-local initial conditions. (Bulgarian. French, Russian summaries)Zbl 0558.35029

MSC:  35K20 35M99 35A05

### Sur la géométrisation des équations avec dérivées partielles linéaires du deuxième ordre. (French)Zbl 0557.53006

Reviewer: V.Oproiu
MSC:  53B20 53B30

### Tricomi problem for a second order equation of mixed type in an unbounded domain. (Russian. English summary)Zbl 0557.35086

MSC:  35M99 45E05 35A05

### Boundary value problems for equations of mixed type in multi-dimensional domains. (Russian)Zbl 0557.35084

Partial differential equations, Banach Cent. Publ. 10, 261-269 (1983).
Reviewer: N.A.Lar’kin
MSC:  35M99 35A05 35B65 35G15

### Estimates of the solutions of a problem with initial jump for nonlinear differential equations in case of power growth. (Russian)Zbl 0557.34002

Reviewer: C.A.Harvey
MSC:  34A12 34A34

### The uniqueness of the solutions of the Dirichlet and the third boundary value problems. (English)Zbl 0556.35020

Reviewer: E.Mascolo
MSC:  35G15 35A05 35B65

### Covariances between UMVU estimators for means of transformed variables. (English)Zbl 0555.62045

Reviewer: H.N.Nagaraja
MSC:  62H12 33C60
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### Bergman kernels of first kind for $$W_{z\zeta}-(s+z\zeta)W=0$$, s$$\in {\mathbb{Z}}$$. (English)Zbl 0555.35006

Bull. Appl. Math. 30, No. 194, 16 p. (1983).
Reviewer: R.Salvi
MSC:  35C15 32A25 35L10

### Scattering of solutions of nonlinear Klein-Gordon equations in three space dimensions. (English)Zbl 0554.35095

Reviewer: J.Ginibre
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### On the numerical calculations of stresses and displacements in a fuel pellet with fuzzy cracks. (English)Zbl 0552.73087

MSC:  74R05 74S99

### Convergence of a conditional gradient algorithm for relaxed controls involving first boundary value problems of parabolic type. (English)Zbl 0552.49026

Reviewer: T.Seidman
MSC:  90C52 35K20 65K10 35B37 49J20 93B40 93C05 93C20
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### Asymptotic form with respect to a small parameter for the solutions of a differential equation with discontinuous coefficients. (Russian)Zbl 0552.34020

Mosc. Univ. Comput. Math. Cybern. 1983, No. 3, 1-7 (1983); translation from Vestn. Mosk. Univ., Ser. XV 1983, No. 3, 3-8 (1983).
Reviewer: L.Bakule

### Finite-dimensional servomechanism design for parabolic distributed- parameter systems. (English)Zbl 0551.93050

Reviewer: T.Seidman
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### On analytical solutions of vibrations of rods with variable cross sections. (English)Zbl 0549.73047

MSC:  74H45 74K10
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### Hybrid methods for a special class of second-order differential equations. (English)Zbl 0549.65049

Numerical mathematics and computing, Proc. 12th Manitoba Conf., Winnipeg/Manit. 1982, Congr. Numerantium 38, 203-225 (1983).
MSC:  65L05 65L20

### Periodic solutions of nonlinear hyperbolic problems. (English)Zbl 0549.35085

Reviewer: P.Ramankulty
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### Asymptotics for a class of non-linear evolution equations, with applications to geometric problems. (English)Zbl 0549.35071

Reviewer: R.Landes
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### Group classification and integration of ordinary differential equations of the form $$\vec X''=\vec F(\vec X\prime,\vec X,t)$$ which are invariant with respect to certain groups of transformations. (Russian. English summary)Zbl 0548.34003

Algebraic-theoretical methods in the problems of mathematical physics, Collect. sci. Works, Kiev 1983, 78-82 (1983).
Reviewer: Ye.Yanqian
MSC:  34A25 34A99

### Transverse bending of a console in nonlinear creep theory. (Russian. English summary)Zbl 0547.73025

MSC:  74C99 74K10

### Poincaré-Steklov operators and their applications in analysis. (Operatory Puankare-Steklova i ikh prilozheniya v analize). (Russian)Zbl 0547.47029

Moskva: Otdel Vychislitel’noj Matematiki AN SSSR. 184 p. R. 1.10 (1983).
Reviewer: Annotation

### Application of the residue method for solving mixed problems in case of non-selfadjoint boundary conditions. (Russian. English summary)Zbl 0547.35016

Reviewer: R.Iino
MSC:  35E15 35L20 35C10

MSC:  34-01

### Differential equations, sources of modelling problems. (Romanian)Zbl 0547.34001

Reviewer: V.Olariu
MSC:  34-01

### On the smoothness of functionals in problems of optimal control over coefficients of parabolic equations. (Russian)Zbl 0546.49006

Investigations in continuum mechanics, Collect. sci. Works, Irkutsk 1983, 91-99 (1983).
MSC:  49K20 49J50 35K20 35B30 35B37 93C05 93C20

### Sur les solutions analytiques de l’équation d’un fluide général. (French)Zbl 0546.35067

MSC:  35Q99 35G20 35A20 35A05

### On nonlinear hyperbolic evolution equations with unilateral conditions dependent on time. (English)Zbl 0546.35044

Reviewer: S.Aizawa
MSC:  35L70 35A05 34G20
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### Determination of the solution of an ordinary differential equation according to the given asymptotics at infinity. (Russian)Zbl 0545.34036

Reviewer: J.Kalas
MSC:  34E05 34A30 65L99

### Dual variational methods in non-convex optimization and differential equations. (English)Zbl 0544.49010

Mathematical theories of optimization, Proc. Conf., Genova 1981, Lect. Notes Math. 979, 108-120 (1983).
Reviewer: C.L.Sandblom

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### Smoothness of the solution of a nonlinear differential equation. (Russian)Zbl 0544.34008

Reviewer: F.Gumowski
MSC:  34A34 34A99

### Theory of difference schemes. Textbook. (Teoriya raznostnykh skhem. Uchebnoe posobie). 2nd ed., rev. (Russian)Zbl 0543.65066

Moskva: “Nauka”. Glavnaya Redaktsiya Fiziko-Matematicheskoj Literatury. 616 p. R. 1.60 (1983).

### Impact-induced vibrations of a simple viscoelastic column model. (English)Zbl 0542.73026

MSC:  74M20 74K10 74D99
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### An oscillation criterion for $$n$$th order non-linear differential equations with functional arguments. (English)Zbl 0542.34056

Reviewer: B.H.Stephan
MSC:  34K99 34C10
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### Flot-invariance par rapport aux équations différentielles du second ordre sur une variété. (French)Zbl 0541.58046

MSC:  37N99 57N75

### The initial-boundary value problem for a multidimensional second-order system of composite type. (English. Russian original)Zbl 0541.35056

Sov. Math., Dokl. 28, 249-253 (1983); translation from Dokl. Akad. Nauk SSSR 271, 1298-1302 (1983).
Reviewer: W.Haack

### On an approach to the investigation of qualitative properties of the solutions of non-divergent second order elliptic equations. (Russian)Zbl 0541.35022

Reviewer: O.John
MSC:  35J25 35B05 35B45 35A05
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### On the asymptotic behavior of oscillatory solutions of functional differential equations. (English)Zbl 0541.34045

Reviewer: B.H.Stephan
MSC:  34K99 34C10 34E99

### Approximate solution of a nonlinear third order differential equation by the averaging method. (Russian)Zbl 0541.34024

Approximate methods in the investigation of nonlinear oscillations, Collect. sci. Works, Kiev 1983, 40-43 (1983).
Reviewer: T.Mitsui
MSC:  34C29

### Asymptotic solutions for a problem of Laval nozzle theory. (Russian)Zbl 0539.76070

Two-dimensional and three-dimensional problems of continuum mechanics, Frunze 1983, 73-82 (1983).
Reviewer: E.Ihle
MSC:  76N15 76H05

### Axisymmetric nozzle with curvilinear transition lines for a Chaplygin gas. (Russian)Zbl 0539.76067

Two-dimensional and three-dimensional problems of continuum mechanics, Frunze 1983, 23-32 (1983).
Reviewer: E.Ihle
MSC:  76N15 76B10

MSC:  76B10

MSC:  76B10

### Determining optimum thickness of circular plate for flexure. (English. Russian original)Zbl 0539.73107

Sov. Appl. Mech. 18, 914-919 (1983); translation from Prikl. Mekh. 18, No. 10, 68-74 (1982).
Reviewer: A.M.Brandt
MSC:  74P99 74K20
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