## Found 270 Documents (Results 1–100)

100
MathJax

### On one approach to eigenvalue problems with a biharmonic operator. (English)Zbl 0825.65079

MSC:  65N25 35P15 35J40

### On the Heun equation. (Russian)Zbl 0802.34008

Ivlev, D. D. (ed.), Studies on boundary value problems and their applications. Interuniversity collection of scientific works. Cheboksary: Chuvashskij Gosudarstvennyj Universitet, 126-132 (1987).
MSC:  34M99 30D05

### Defect minimization in operator equations: theory and applications. (English)Zbl 0682.47033

Pitman Research Notes in Mathematics Series, 163. Harlow: Longman Scientific & Technical; New York: John Wiley & Sons, Inc. xiv, 106 p. \$ 34.95 (1987).

### Asymptotic of a solution of contrast-structure type. (English. Russian original)Zbl 0725.34061

Math. Notes 42, No. 6, 956-961 (1987); translation from Mat. Zametki 42, No. 6, 831-841 (1987).
MSC:  34E05 34C05
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### On the transfer from infinity of admissible boundary conditions for systems of linear ordinary differential equations with a large parameter. (English. Russian original)Zbl 0716.34063

U.S.S.R. Comput. Math. Math. Phys. 27, No. 3, 132-146 (1987); translation from Zh. Vychisl. Mat. Mat. Fiz. 27, No. 6, 847-866 (1987).
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### An integral-transformation method for solving some types of differential equations. (English. Russian original)Zbl 0714.34004

Differ. Equations 23, No. 10, 1132-1141 (1987); translation from Differ. Uravn. 23, No. 10, 1668-1679 (1987).
MSC:  34A05 34A30 44A15

### On unconditional basis property on a closed interval of systems of eigen- and adjoint functions of a second order operator with discontinuous coefficients. (English. Russian original)Zbl 0712.34090

Differ. Equations 23, No. 6, 626-635 (1987); translation from Differ. Uravn. 23, No. 6, 941-952 (1987).
MSC:  34L05 42C30

MSC:  34A30
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### Behaviour of solutions of a class of partial differential equations in an infinite domain. (Russian)Zbl 0709.35049

Boundary value problems, Interuniv. Collect. sci. Works, Perm’, 81-86 (1987).

### Non linear perturbation in classical scattering. (English)Zbl 0709.34065

Reviewer: D.R.Yafaev
MSC:  34L05

### On mutual conditionality of signs of Green functions for two-point boundary value problems. (Russian)Zbl 0708.34064

Boundary value problems, Interuniv. Collect. sci. Works, Perm’, 15-20 (1987).
MSC:  34K10 34A30 34B27

### On the problem of stability for solutions of the equation $$y''+p(t)y=0$$. (Russian)Zbl 0708.34052

Boundary value problems, Interuniv. Collect. sci. Works, Perm’, 49-55 (1987).
MSC:  34D20

### To the theory of central dispersions for the linear differential equations $$y''=q(t)y$$ of a finite type-special. (English)Zbl 0708.34011

Reviewer: L.Janos
MSC:  34A30
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### The algorithm of walking on parallelepipeds for the solution of a boundary value problem for a differential equation of elliptic type. (Russian)Zbl 0706.65121

MSC:  65Z05 65C05 35J25
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### Controlling coefficients of an elliptic equation. (Russian)Zbl 0705.49003

Boundary value problems, Interuniv. Collect. sci. Works, Perm’, 140-145 (1987).
MSC:  49J20 49K20

### The symmetry and exact solutions of some multidimensional nonlinear equations of mathematical physics. (English)Zbl 0705.35024

Differential geometric methods in theoretical physics, Proc. 15th Int. Conf., DGM, Clausthal/FRG 1986, 544-549 (1987).

MSC:  34L10

### The method of solution of the boundary value problem applied to a certain fourth order differential equation. (English)Zbl 0699.34018

Reviewer: D.Tiba
MSC:  34B10 34A30 34C10
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### A relaxed control problem for two-phase conductors. (English)Zbl 0696.49013

MSC:  49J20 49M20 35J25

### Existence of a solution of the first boundary value problem for a second order elliptic differential equation. (Korean. English summary)Zbl 0695.35063

MSC:  35J25 35D05

### On the solution of a certain class of discontinuous differential equations modelling a closed-loop system. (English)Zbl 0688.34014

Reviewer: O.Akinyele
MSC:  34B99

### Partial extinction in reaction-diffusion. (English)Zbl 0686.35062

Conf. Semin. Mat. Univ. Bari 224, 21 p. (1987).
Reviewer: C.Bandle

### Explicit solutions for Sturm-Liouville operator problems. II. (English)Zbl 0682.34018

MSC:  34L99 47E05
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### Numerical solutions of problems of heat conductivity. (Chislennye resheniya zadach teploprovodnosti). (Russian)Zbl 0681.65073

Khar’kov: Izdatel’stvo pri Khar’kovskom Gosudarstvennom Universitete Izdatel’skogo Ob”edineniya “Vishcha Shkola”. 112 p. R. 1.20 (1987).
Reviewer: St.Burys

### On periodic solutions of second order equations with a lag. (Russian)Zbl 0679.35004

Questions of the stability of integral manifolds in the equations of mathematical physics, Collect. Sci. Works, Kiev 1987, 97-99 (1987).
MSC:  35B10 35L05 34G10

### $$L_ p$$-bounds for the Klein-Gordon equation. (English. Russian original)Zbl 0677.35063

Differ. Equations 23, No. 11, 1330-1335 (1987); translation from Differ. Uravn. 23, No. 11, 1956-1963 (1987).
Reviewer: L.Lebedev

### On the mixed initial-boundary value problem for the semilinear degenerate evolution equations. (Chinese. English summary)Zbl 0676.35068

Reviewer: J.Tian
MSC:  35M99 35L75 35D05 35A05 35B65 35B45 35A35

### The energy method of nonhomogeneous definite problems for positive definite second order partial differential equations. (Chinese. English summary)Zbl 0676.35013

Reviewer: J.Tian
MSC:  35G05 35D05

### Common behaviour of solutions of some collections of second order linear ordinary differential equations with periodic coefficients. (English)Zbl 0675.34005

Reviewer: J.Vosmanský

### Lane-Emden equations and related topics on nonlinear elliptic and parabolic problems. (English)Zbl 0674.35047

New results in nonlinear partial differential equations, Semin. Bonn/FRG 1984, Aspects. Math. E10, 135-152 (1987).
Reviewer: S.Totaro

### Existence and uniqueness results for dynamic contact problems with nonlinear normal and friction interface laws. (English)Zbl 0672.73079

MSC:  74A55 74M15 74G30 74H25 35L85 74S30 35A05
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### Hamiltonian structure for the modulation equations of a sine-Gordon wavetrain. (English)Zbl 0668.35064

Reviewer: W.Wendt
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### Second order evolution equation in Hilbert spaces. (Chinese. English summary)Zbl 0668.35051

MSC:  35L15 47F05 34G10

### Uniform asymptotic expansions of solutions of second-order differential equations with two turning points and a complex spectral parameter. (English. Russian original)Zbl 0668.34057

Differ. Equations 23, No. 6, 684-689 (1987); translation from Differ. Uravn. 23, No. 6, 1014-1020 (1987).
Reviewer: J.H.Tian
MSC:  34E05 34E20

### On a discrete spectrum of a problem connected with the wave propagation in an inhomogeneous medium with viscous friction. (English. Russian original)Zbl 0668.34026

Differ. Equations 23, No. 9, 1054-1058 (1987); translation from Differ. Uravn. 23, No. 9, 1533-1538 (1987).
Reviewer: J.H.Tian
MSC:  34L99

### Reformulation of the parabolic approximation for waves in stratified moving media. (English)Zbl 0667.76152

MSC:  76V05 76Q05
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### Asymptotic solutions of second order differential equations with slowly varying and oscillating coefficients. (Russian. English summary)Zbl 0667.34010

Reviewer: J.H.Tian
MSC:  34A12 34B05

### Regularity of the solutions of second order evolution equations and their attractors. (English)Zbl 0666.35062

Reviewer: V.Barbu
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### The stability of cylindrical shells under with time fast growing loadings. (Russian)Zbl 0664.73024

Reviewer: G.V.Vasiliev
MSC:  74H55 74K15 74E30

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### Emission from quasi-classical quantization, and stochastic decay of sine- Gordon solitons in external fields. (English)Zbl 0663.35092

MSC:  35Q99 81S10 35L70
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### The concept of streamfunctions in the Wien effect on a weak electrolyte. (English)Zbl 0663.35082

MSC:  35Q99 35C05
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### A singular perturbation problem for periodic boundary differential equation. (English)Zbl 0663.34037

Reviewer: S.Manolov
MSC:  34C25
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### Mathematical models for some types of chemical information systems. (English)Zbl 0659.92026

Reviewer: A.Balint
MSC:  92D50 34K99 92D40
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### On stability of motion of systems with finite variation coefficients. (English)Zbl 0659.34055

Reviewer: Chungyou He
MSC:  34D20

### An expansion theorem for an eigenvalue problem with eigenvalue parameter in the boundary condition. (English)Zbl 0659.34020

Reviewer: B.Šehter
MSC:  34L99

### Method of integral transforms for solving some classes of differential equations. (Russian)Zbl 0659.34001

Reviewer: L.P.Lebedev
MSC:  34A05 34A30 44A15

### Riesz potentials on Lorentz spaces. (English. Russian original)Zbl 0658.46022

Math. USSR, Sb. 58, 467-475 (1987); translation from Mat. Sb., Nov. Ser. 130(172), No. 4, 465-475 (1986).
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### Construction of fundamental solutions of an abstract nonlinear parabolic equation in a neighborhood of a bifurcation point. (English. Russian original)Zbl 0658.35046

Math. USSR, Sb. 56, 295-309 (1987); translation from Mat. Sb., Nov. Ser. 128(170), No. 3, 306-320 (1985).
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### Energy decay of underdamped nonlinear wave equations. (English)Zbl 0656.35116

MSC:  35Q99 35L70 35B40

### Nonexistence of spatially localized free vibrations for a class of nonlinear wave equations. (English)Zbl 0656.35093

MSC:  35L70 35A05 35Q99
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### Convergence properties of strongly-damped semilinear wave equations. (English)Zbl 0656.35090

Nonlinear semigroups, partial differential equations and attractors, Proc. Symp., Washington/D.C. 1985, Lect. Notes Math. 1248, 1-4 (1987).
MSC:  35L70 35D05 35B65 35Q99

### Transfer of admissible boundary conditions at infinity for systems of linear ordinary differential equations with a large parameter. (Russian)Zbl 0656.34041

Reviewer: M.Möller

### Out-of-phase solutions to a second order linear differential equation with forced oscillation. (English)Zbl 0656.34025

Reviewer: E.O.Roxin
MSC:  34C10 34A30
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### Some comments on Sturm-Liouville eigenvalue problems with interior singularities. (English)Zbl 0656.34013

Reviewer: B.Šehter
MSC:  34L99
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### Asymptotics of the Titchmarsh-Weyl m-coefficient for integrable potentials. II. (English)Zbl 0656.34012

Differential equations and mathematical physics, Proc. Int. Conf., Birmingham/Ala. 1986, Lect. Notes Math. 1285, 222-229 (1987).
Reviewer: M.Idemen
MSC:  34B20

### Particle modeling by systems of nonlinear ordinary differential equations. (English)Zbl 0656.34009

Nonlinear analysis and applications, Proc. 7th Int. Conf., Arlington/Tex. 1986, Lect. Notes Pure Appl. Math. 109, 203-211 (1987).
MSC:  34A34

MSC:  34A34
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Reviewer: J.Tian
MSC:  34D20
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### On the asymptotic properties of linear differential equations. (English)Zbl 0655.34039

Reviewer: J.H.Tian
MSC:  34D05 34C10 34E05
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### Approximation method of solution of boundary problems. (English. Russian original)Zbl 0654.34012

Ukr. Math. J. 39, No. 3, 297-299 (1987); translation from Ukr. Mat. Zh. 39, No. 3, 378-379 (1987).
MSC:  34B05
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### On a method for proving the solvability of nonlinear boundary value problems. (Russian)Zbl 0653.47043

Reviewer: J.Appell
MSC:  47J05 47H07 35J65

### Solutions for the equation of nonlinear vibrations in Sobolev spaces of fractionary order. (English)Zbl 0652.35075

Reviewer: L.A.Medeiros
MSC:  35L70 34G20 35A05 46E35 35A07

### Periodic solutions of second order Hamiltonian systems and Morse theory. (English)Zbl 0652.34053

Recent advances in Hamiltonian systems, Proc. Int. Conf., L’Aquila/Italy 1986, 155-161 (1987).
Reviewer: V.Kozobrod
MSC:  34C25 37J99

### Stationary and periodic solutions of a nonlinear nonautonomous differential equation. (English. Russian original)Zbl 0652.34043

Differ. Equations 23, No. 3, 278-283 (1987); translation from Differ. Uravn. 23, No. 3, 401-409 (1987).
MSC:  34C25 34A34

### L’équation différentielle aréolaire de Laplace et la possibilité de l’introduction des transformations de Laplace aréolaires. (French)Zbl 0652.34009

Reviewer: D.G.Babitt
MSC:  34M99 35B15

### Une classe de méthodes numériques pour l’integration directe d’équations differentielles du type $$y''=f(t,y,y')$$. (A class of numerical methods for the direct integration of differential equations of type $$y''=f(t_ 1,y,y').)$$. (French)Zbl 0651.65059

Reviewer: M.Sibony
MSC:  65L05 65L20 34A34

### Isochronism problems for nonlinear second order differential equations. (English)Zbl 0651.34045

Reviewer: A.Osborne
MSC:  34C25 34A34

### Repeated diagonalization and extended Liouville-Green asymptotic formulae. (English)Zbl 0651.34033

MSC:  34C11 34D05
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### Asymptotic expansions of solutions of a confluent hypergeometric equation. (English)Zbl 0651.34006

MSC:  34M99 34E05 33B15

### Programmation des éléments finis $$(P_ 1,2D)$$. (French)Zbl 0649.65058

Toulouse: CEPADUES-Éditions. 115 p.; FF 94.00 (1987).
Reviewer: J.Weisel

### Perturbation of periodic boundary conditions. II: Bifurcation and symmetry. (English)Zbl 0648.34061

Reviewer: L.Janos
MSC:  34D10 34E10
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### Asymptotic integration of a second order ordinary differential equation. (English)Zbl 0648.34038

Reviewer: L.Reizins
MSC:  34C11 34E99
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### Generalization of an oscillation criterion for sublinear differential equations. (English)Zbl 0648.34032

Reviewer: T.S.Lin
MSC:  34C10
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### Riccati techniques and variational principles in oscillation theory for linear systems. (English)Zbl 0648.34031

Reviewer: J.Ohriska
MSC:  34C99
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### Some properties of the zeros of polynomial solutions of Sturm-Liouville equations. (English)Zbl 0648.34021

Reviewer: J.Weidmann
MSC:  34L99 33C45 65H05
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### Existence of logarithmic-type solutions to the Kapila-Kassoy problem in dimensions 3 through 9. (English)Zbl 0648.34018

Reviewer: L.Janos
MSC:  34B10
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### Solitäre Lösungen endlicher Energie von nichtlinearen Klein-Gordon- Gleichungen. (Solitary solutions of finite energy of nonlinear Klein- Gordon equations). (German)Zbl 0647.35056

Reviewer: P.Meinhold
MSC:  35L70 35Q99 35B40

Reviewer: R.Leis

### Oscillation and asymptotic behavior of second order neutral differential equations. (English)Zbl 0647.34071

Reviewer: A.Laforgia
MSC:  34K99 34C10 34E05
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### Boundedly asymptotic decompositions of an entire interval for second order linear differential equations with multi-coalescing transition points. (English)Zbl 0647.34056

MSC:  34E05 34A30 34E20

### On the mathematical theory of tidal wave propagation. (English)Zbl 0646.76017

MSC:  76B15 35Q99

### Difference methods for solving the first boundary value problem of a second-order ordinary differential equation with two small parameters. (Chinese. English summary)Zbl 0646.65067

Reviewer: Xie Shenquan
MSC:  65L10 34B05 34E15

### Saxon-Hutner theorem for periodic multilayers. (English)Zbl 0646.34053

Reviewer: A.Boucherif
MSC:  34C25 81R10

### Periodic solutions for classes of autonomous systems with uniform characteristics in resonance and initial conditions. (Russian)Zbl 0646.34047

Nonlinear oscillations, Proc. 11th Int. Conf., Budapest 1987, 293-296 (1987).
MSC:  34C25

### Generalized Ambrosetti-Prodi conditions for nonlinear two-point boundary value problems. (English)Zbl 0646.34022

Reviewer: G.Osipenko
MSC:  34B10
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### Stationary solutions and their stability for Kimura’s diffusion model with intergroup selection. (English)Zbl 0645.92013

Reviewer: Y.Ogura
MSC:  92D10 60J70 35K55
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MSC:  34B15

### On global solutions and monodromy groups of differential equations having at least two singularities on the Riemann sphere. (English)Zbl 0645.34005

Reviewer: V.Lakshmikantham
MSC:  34A25 34A05 34A30

### A new approach to the L-Q-R problem for hyperbolic dynamics with boundary control. (English)Zbl 0644.93022

Distributed parameter systems, Proc. 3rd Int. Conf., Vorau/Austria 1986, Lect. Notes Control Inf. Sci. 102, 89-111 (1987).
Reviewer: M.Megan

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### Wiener’s criterion and $$\Gamma$$-convergence. (English)Zbl 0644.35033

Reviewer: M.Codegone
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### Boundary value problems for nonlinear odinary differential-equations in Banach spaces. (English)Zbl 0644.34059

Differential equations and optimal control, Proc. 6th Reg. Sci. Sess., Żagań/Pol. 1986, Sect.: Differential equations, 54-57 (1987).
Reviewer: S.Szufla
MSC:  34G10

### Nonlinear stochastic oscillators. (English)Zbl 0644.34056

Nonlinear oscillations, Proc. 11th Int. Conf., Budapest 1987, 142-148 (1987).
MSC:  34F05 34C15

### Existence of several periodic solutions to equations of Liénard type. (English. Russian original)Zbl 0644.34031

Sov. Math. 31, No. 3, 1-4 (1987); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1987, No. 3(298), 3-5 (1987).
Reviewer: S.Zhuravlev
MSC:  34C25

### On the existence of periodic solutions of forced Liénard differential equations. (English)Zbl 0644.34030

Reviewer: P.Smith
MSC:  34C25
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### Perturbations near zero of the leading coefficient of solutions to a nonlinear differential equation. (English)Zbl 0644.34023

Reviewer: A.Osborne
MSC:  34C05 34C28 03H10
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### Observability of systems with time-lag. (English. Russian original)Zbl 0644.34016

Differ. Equations 23, No. 4, 393-400 (1987); translation from Differ. Uravn. 23, No. 4, 598-608 (1987).
Reviewer: M.Möller
MSC:  34B10 34C10

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