## Found 179 Documents (Results 1–100)

100
MathJax

### Spectral theory of differential operators. (English)Zbl 0805.35081

Partial differential equations VII. Encycl. Math. Sci. 64, 1-261 (1994).

### The collocation method for a second order differential equation. (Russian)Zbl 0761.65087

Numerical methods for solving boundary value problems, Themat. Collect. Sci. Works, Baku, 13-18 (1989).
Reviewer: B.Maslowski
MSC:  65N35 65N12 35J25

### Solvability of boundary value problems for second order operator- differential equations in spaces with weight. (Russian)Zbl 0758.34049

Linear operators and their applications, Themat. Collect. Sci. Works, Baku, 46-49 (1989).
MSC:  34G10 47D06

### Elastic transverse waves initiated in an infinite medium by rotation of a circular cone. (English. Russian original)Zbl 0736.73019

Sov. Appl. Mech. 25, No. 8, 797-801 (1989); translation from Prikl. Mekh., Kiev 25, No. 8, 66-70 (1989).
MSC:  74J10 74S30 34A25 35G10 44A15
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### On existence of solutions of second order nonlinear integro-differential equations with self-controlled lag, which are representable in the form of some asymptotic formulas. (Russian)Zbl 0805.45007

Rafatov, R. (ed.), Some problems in the theory of differential, integro- differential equations and their applications. Collection of scientific works. Frunze: Frunzenskij Politekhnicheskij Institut, 35-41 (1989).
MSC:  45J05 45G10 45M05

### On some theorems of convergence of solutions for a second order differential equation. (Russian)Zbl 0803.34045

Kutukova, L. T. (ed.), Dynamical systems. Interuniversity collection of scientific works. Yakutsk: Yakutskij Gosudarstvennyj Universitet, 52-57 (1989).
Reviewer: W.Müller (Berlin)
MSC:  34D20 34D05

### Design and construction of objects of motion with the help of an electronic computer. (Russian)Zbl 0803.34047

Kutukova, L. T. (ed.), Dynamical systems. Interuniversity collection of scientific works. Yakutsk: Yakutskij Gosudarstvennyj Universitet, 18-25 (1989).
Reviewer: W.Müller (Berlin)
MSC:  34D20 68U07 42A16

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### Procedure for determining the dispersion and correlation matrices for a multidimensional random process. (English. Russian original)Zbl 0792.60030

J. Sov. Math. 67, No. 3, 3143-3148 (1993); translation from Vychisl. Prikl. Mat., Kiev 69, 135-141 (1989).
MSC:  60G12 60H10
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### Evolution equations and their applications. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto (Japan), October 24-26, 1988. (Japanese)Zbl 0722.35002

RIMS Kokyuroku, 698. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. ii, 187 p. (1989).

### Fundamental functions of the equations of mathematical physics in the approximate solutions of boundary value problems. Part 1. (Фундаментальные функции уравнений математической физики в приближенных решениях граничных задач. Часть 1.) (Russian)Zbl 0752.65078

Tbilisi: Izdatel’stvo Tbilisskogo Universiteta. 412 p. (1989).

### Partial differential equations of applied mathematics. 2nd ed. (English)Zbl 0699.35003

Pure and Applied Mathematics. New York etc.: John Wiley & Sons, Inc. xiii, 891 p. £51.30 (1989).

Conference Board of the Mathematical Sciences. Regional Conference Series in Mathematics, 73. Providence, RI: American Mathematical Society (AMS). x, 91 p. $21.00 (1989). Reviewer: H.Koch ### Problems of optimal control for elliptic equations. Mathematical questions. (Zadachi optimal’nogo upravleniya dlya ehllipticheskikh uravnenij. Matematicheskie voprosy.) (Russian)Zbl 0693.49003 Latvijskij Gosudarstvennyj Universitet Im. P. Stuchki. Riga: Zinatne. 278 p. R. 1.30 (1989). Reviewer: M.Goebel ### An introduction to the numerical analysis of spectral methods. (Transl. of report CEA-N-2278, dated 1981, of the French Atomic Energy Commission, titled ‘Analyse numérique des méthodes spectrales’). (English)Zbl 0682.65073 Lecture Notes in Physics, 318. Berlin etc.: Springer-Verlag. v, 154 p. DM 39.00 (1989). Reviewer: F.v.Finckenstein ### The general variation of constants problem in the normal differential equation of second order. (Le problème général de la variation des constantes dans l’équation différentielle normale du second ordre.) (Macedonian. French summary)Zbl 0779.34007 MSC: 34A25 34A05 ### Fundamentals of differential equations. 2nd ed. (English)Zbl 0676.34002 Redwood City, LA etc.: Benjamin/Cummings Publishing Company, Inc. xv, 682 p. (1989). ### Topics in functional analysis and applications. (English)Zbl 0666.46001 New York etc.: John Wiley & Sons, Inc.; New Delhi: Wiley Eastern Limited. xii, 267 p.$ 39.50; £18.40 (1989).
Reviewer: J.Lorenz

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### The Goursat problem for a fourth order quasi-linear hyperbolic equation. (Russian)Zbl 0729.45012

Mathematical modelling of physical processes, Collect. Sci. Works, Kiev, 54-57 (1989).
MSC:  45K05 45G10

### The forcing out of saline water by fresh water during filtration from a mole irrigator. (English. Russian original)Zbl 0728.76108

J. Appl. Math. Mech. 53, No. 3, 350-355 (1989); translation from Prikl. Mat. Mekh. 53, No. 3, 455-461 (1989).
MSC:  76S05 35Q35 80A20
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### Equilibrium of an elastic spherical cap pulled at the rim. (English)Zbl 0724.73101

MSC:  74G60 34B15 74K15 74S30 74P10 49J15
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### The h-p version of the finite element method for problems with nonhomogeneous essential boundary condition. (English)Zbl 0723.73077

Reviewer: W.Ehlers (Essen)
MSC:  74S05 65N30
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### Bounded but terminating solutions to a second order differential equation. (English)Zbl 0718.34046

Differential equations and applications, Proc. Int. Conf., Columbus/OH (USA) 1988, Vol. II, 53-55 (1989).
MSC:  34C11 34A12

### Investigation of finite-difference models of the Van der Pol equation. (English)Zbl 0717.65045

Differential equations and applications, Proc. Int. Conf., Columbus/OH (USA) 1988, Vol. II, 210-215 (1989).
Reviewer: I.Ginchev

### Matrix analogues of elliptic functions. (English. Russian original)Zbl 0716.34003

Funct. Anal. Appl. 23, No. 4, 323-325 (1989); translation from Funkts. Anal. Prilozh. 23, No. 4, 81-82 (1989).
MSC:  34A25 70F10 33E05
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### Homogenization of three-dimensional elasticity problem for a thin inhomogeneous bar. (English. Russian original)Zbl 0715.73005

Mosc. Univ. Math. Bull. 44, No. 5, 5-10 (1989); translation from Vestn. Mosk. Univ., Ser. I 1989, No. 5, 6-10 (1989).
Reviewer: J.L.Nowinski

### Discretization of an equation of parabolic type with discontinuous solution by the finite element method. (Russian)Zbl 0715.65077

Reviewer: C. I. Gheorghiu

### Spectral theory of differential operators. (Russian)Zbl 0715.35057

Itogi Nauki Tekh., Ser. Sovrem. Probl. Mat., Fundam. Napravleniya 64, 248 p. (1989).
Reviewer: J.Appell

### An inverse problem for a second-order differential equation in Banach space. (English. Russian original)Zbl 0715.34112

Differ. Equations 25, No. 6, 730-738 (1989); translation from Differ. Uravn. 25, No. 6, 1000-1009 (1989).
MSC:  34G10 34A55 35Q72 93B05

### New formulas for an approximate solution of the one-dimensional wave equation. (English. Russian original)Zbl 0715.34020

Differ. Equations 25, No. 11, 1370-1374 (1989); translation from Differ. Uravn. 25, No. 11, 1941-1946 (1989).
MSC:  34A45 34C20

### On approximate symmetry in solutions of the nonlinear wave equation with a small parameter. (Russian. English summary)Zbl 0714.35050

Reviewer: E.D.Belokolos
MSC:  35L70 35Q99

### Basic properties of the system of eigenfunctions of a boundary value problem with a multiple root of the characteristic polynomial. (English. Russian original)Zbl 0714.34122

Mosc. Univ. Math. Bull. 44, No. 4, 23-31 (1989); translation from Vestn. Mosk. Univ., Ser. I 1989, No. 4, 17-22 (1989).
MSC:  34L10

### On a fundamental central dispersion of the first kind and the Abel functional equation in strongly regular spaces of continuous functions. (English)Zbl 0714.34112

Reviewer: T.Dłotko
MSC:  34K99 34C10 34C11
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### Spectral function of a second-order functional-differential operator. (English. Russian original)Zbl 0714.34103

Differ. Equations 25, No. 11, 1317-1322 (1989); translation from Differ. Uravn. 25, No. 11, 1882-1888 (1989).
MSC:  34K10 34L05

### A nonlocal boundary-value problem of the first kind, with both differential and finite-difference analysis. (English. Russian original)Zbl 0714.34034

Differ. Equations 25, No. 8, 917-924 (1989); translation from Differ. Uravn. 25, No. 8, 1297-1307 (1989).
MSC:  34B10

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### A procedure of determination of the variance and correlation matrices of a multi-dimensional stochastic process. (Russian)Zbl 0713.60046

Reviewer: F.Liese
MSC:  60G12 60H10

### On the properties of central dispersions of linear second order differential equations being of finite type-special. (English)Zbl 0713.34012

Reviewer: Ge Weigao
MSC:  34A30
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### On integration in closed form of a class of Fuchs equations and its application. (Russian)Zbl 0713.34002

Reviewer: S.G.Hristova
MSC:  34A05 34A99

### Periodic boundary value problems of first and second order differential equations. (English)Zbl 0712.34058

Reviewer: I.Troch
MSC:  34C25 34B15
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### Periodic boundary value problems for second order impulsive differential systems. (English)Zbl 0712.34033

Reviewer: B.Shekhter
MSC:  34B15
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### On a linear singularly perturbed two-point boundary value problem. (English)Zbl 0712.34028

Reviewer: I.Troch
MSC:  34B10 34B05 34E15

### Calculation of a class of improper integrals by the method of hybrid Fourier-Hankel integral transform of second Fourier-kind. (Russian)Zbl 0712.34027

Reviewer: J.Jarnik
MSC:  34B10

### A numerical iterative method for solving regular elliptic problems. (English. Russian original)Zbl 0708.65098

U.S.S.R. Comput. Math. Math. Phys. 29, No. 3, 193-201 (1989); translation from Zh. Vychisl. Mat. Mat. Fiz. 29, No. 6, 923-934 (1989).
MSC:  65N22 65F10 35J25
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### Analysis of singularities of solutions to semilinear wave equation $$\square u=f(t,x,u,Du)$$ in high space dimensions. (Chinese)Zbl 0707.35097

MSC:  35L70 35B99

### On a Galerkin-averaging method for weakly non-linear wave equations. (English)Zbl 0707.35095

Reviewer: P.K.Wong
MSC:  35L70 34C29 42B05
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Reviewer: L.Berg
MSC:  34E15
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### The boundedness of solutions of a nonlinear functional-differential equation of the second order. (Chinese. English summary)Zbl 0706.34059

MSC:  34K99 34C11

### 2$$\pi$$-periodic solutions of second-order nonlinear differential equation $$x''+f(t,x)=0$$. (Chinese. English summary)Zbl 0706.34041

MSC:  34C25 34A34
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### On the distance between zeroes and the limit-point problem. (English)Zbl 0705.34033

Reviewer: P.K.Wong
MSC:  34C10 34B20
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### A geometric characterisation of Lagrangian second-order differential equations. (English)Zbl 0704.34017

MSC:  34A99 70H03
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### Nonlinear boundary-value problem with solution breaks. (English. Russian original)Zbl 0703.34030

Differ. Equations 25, No. 12, 1459-1467 (1989); translation from Differ. Uravn. 25, No. 12, 2066-2075 (1989).
Reviewer: P.S.Milojevic
MSC:  34B15

### Pseudodifferential equations in functional superanalysis. II. The Feynman-Kac formula. (English. Russian original)Zbl 0702.35258

Differ. Equations 25, No. 3, 358-365 (1989); translation from Differ. Uravn. 25, No. 3, 505-514 (1989).
Reviewer: A.Yu.Khrennikov
MSC:  35S05 81T30 35K10

### On the number of stationary solutions of a scalar parabolic equation. (Russian)Zbl 0702.35111

Reviewer: B.G.Konopelchenko
MSC:  35K20 35A99 76R50

### Strong continuity of the solution to the Lyapunov equation $$XL-BX=C$$ relative to an elliptic operator L. (English)Zbl 0702.35069

Reviewer: T.Nambu
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### Properties of solutions of nonlinear filtration equations. (English)Zbl 0702.35029

Reviewer: G.Boillat
MSC:  35B45 35B99 35K10

### Asymptotic behaviour of strongly damped nonlinear hyperbolic equations. (English)Zbl 0702.35025

Reviewer: P.Biler
MSC:  35B40 35L20 34G20
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### Smoothness as an invariant property of coefficients of linear differential equations. (English)Zbl 0702.34034

Reviewer: M.E.Muldoon
MSC:  34C20 34A30
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### On some non-linear boundary value problems for ordinary differential equations. (English)Zbl 0702.34024

MSC:  34B15 34B27
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### Estimating euclidean reachable sets for retarded functional differential equations with bounded delay. (English)Zbl 0701.93006

MSC:  93B05 34K35 93C30
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### Asymptotics of solutions of a linear second order differential equation with regular singular points. (English. Russian original)Zbl 0699.34056

Sov. Math., Dokl. 39, No. 1, 149-152 (1989); translation from Dokl. Akad. Nauk SSSR 304, No. 4, 796-799 (1989).
Reviewer: J.Ohriska
MSC:  34E05

Reviewer: D.Tila
MSC:  34B10
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### Finite-difference method of solving a class of hyperbolic equations with an order degeneration. (English. Russian original)Zbl 0698.65052

Differ. Equations 25, No. 10, 1235-1245 (1989); translation from Differ. Uravn. 25, No. 10, 1755-1766 (1989).
MSC:  65M06 35L15 35L80

### Efficient estimation in the Cox model for survival data. (English)Zbl 0698.62030

Asymptotic statistics, 4th Prague Symp., Prague/Czech. 1988, 313-319 (1989).
MSC:  62F12

### On the quantum Fermi accelerator and its relevance to “quantum chaos”. (English)Zbl 0698.35143

Reviewer: V.Komkov
MSC:  35Q99 81Q10 35K10
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### Structural localization phenomena and the dynamical phase-space analogy. (English)Zbl 0697.73043

MSC:  74G60 74B20
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MSC:  74B20

### Breathers for the sine-Gordon equation. (English)Zbl 0696.35136

Nonlinear semigroups, partial differential equations and attractors, Proc. Symp., Washington/DC 1987, Lect. Notes Math. 1394, 211-217 (1989).
Reviewer: V.Răsvan
MSC:  35Q99 35L70 35B99

### Decay estimates for the three-dimensional inhomogeneous Klein-Gordon equation and applications. (English)Zbl 0696.35015

Reviewer: V.Răsvan
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### On the Riesz basis of a sine system. (Russian)Zbl 0696.34013

Reviewer: N.Bozhinov
MSC:  34B10 42C30 42C15

### On coupled electroelastic non-stationary oscillations of a piezoceramic cylinder with radial polarization. (Russian)Zbl 0695.73038

Model. Mekh. 3(20), No. 2, 124-133 (1989).
MSC:  74F15 74S30

### On the existence and uniqueness of integrable solutions for integral equations in several variables. (English)Zbl 0695.45007

Reviewer: C.Corduneanu
MSC:  45G10 35L70

### Numerical solution of a quasi-linear equation with a small parameter. (Russian)Zbl 0695.34009

Model. Mekh. 3(20), No. 2, 89-94 (1989).
MSC:  65J99 34A34

### Existence of global strong solution for nonlinear Klein-Gordon equation. (English)Zbl 0694.35184

Reviewer: T.Motai
MSC:  35Q99 35L70 81Q05

### Oscillation theorems for second-order nonlinear differential equations. (English)Zbl 0694.34027

Reviewer: F.Neuman
MSC:  34C10 34C15 34A34
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### A difference scheme for a self-conjugate, singularly perturbed third boundary value problem. (Russian)Zbl 0694.34015

Model. Mekh. 3(30), No. 1, 77-82 (1989).
MSC:  34B05 34E15 34D15

### Foldy-Wouthuysen-type reduction of the second-order Dirac equation. (English)Zbl 0693.35140

MSC:  35Q99 81Q05 47F05
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### The spectral function of a second order functional-differential operator. (Russian)Zbl 0693.34070

Reviewer: M.Tvrdy
MSC:  34K10 34L99

### Relaxation oscillations in a Duffing system. (English. Russian original)Zbl 0693.34039

Differ. Equations 25, No. 3, 300-308 (1989); translation from Differ. Uravn. 25, No. 3, 435-446 (1989).
Reviewer: S.Manolov
MSC:  34C15

### On the boundedness of the number of orthogonal solutions of the equation $$-u''+q(x)u=\lambda u$$. (Russian)Zbl 0693.34037

Reviewer: D.Bobrowski
MSC:  34C11

### New formulae for approximate solution of one-dimensional wave equation. (Russian)Zbl 0693.34008

Reviewer: L.Janos
MSC:  34A45 34C20

### A numerical iteration method for solving regular elliptic problems. (Russian)Zbl 0692.65047

Reviewer: E.D’yakonov
MSC:  65N22 65F10 35J25

### On an inverse problem for a second order differential equation in Banach space. (Russian)Zbl 0692.34064

Reviewer: H.O.Fattorini

### Oscillation theorems for nonlinear second order differential equations with a damping term. (English)Zbl 0692.34030

MSC:  34C10 34A34
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### A note on the non-existence of the limit cycles. (English)Zbl 0692.34024

Reviewer: M.Muresan
MSC:  34C05 34C25

### On unique solvability of an inverse problem for a parabolic equation. (English. Russian original)Zbl 0691.45013

Sov. Math., Dokl. 39, No. 3, 601-605 (1989); translation from Dokl. Akad. Nauk SSSR 306, No. 6, 1289-1293 (1989).
Reviewer: S.Aizicovici
MSC:  45K05 35R30 35K10

### Interaction of singularities of solutions to semilinear wave equation at the boundary. (English)Zbl 0691.35061

Reviewer: K.Kato
MSC:  35L70 35B99 35L67

### Bifurcation of homoclinics in a nonlinear oscillation. (English)Zbl 0691.34031

MSC:  34C15 34C25
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### A sublinear oscillation theorem. (English)Zbl 0691.34028

Reviewer: Zhujun Jing
MSC:  34C10 34C15
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### On a nonlocal boundary value problem of first kind in differential and difference treatments. (Russian)Zbl 0691.34012

Reviewer: M.Möller
MSC:  34B10

### Optimization problems for the differential equation $$y''-qy=0$$. II. (English)Zbl 0689.49023

Reviewer: K.Holmåker
MSC:  49K15 34H05
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### Extension of optimal control problems. (English)Zbl 0689.49004

Reviewer: M. Goebel
MSC:  49J15
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### Reductive perturbation method for quasi-one dimensional nonlinear wave propagation. (English)Zbl 0689.35084

Nonlinear wave motion, Pitman Monogr. Surv. Pure Appl. Math. 43, 196-204 (1989).
Reviewer: Doru Ştefănescu
MSC:  35Q99 35L70

### Quasiclassical scattering of wave packets on a narrow band in which the potential rapidly changes. (English. Russian original)Zbl 0689.35080

Math. Notes 45, No. 1-2, 72-77 (1989); translation from Mat. Zametki 45, No. 1, 106-114 (1989).
Reviewer: D.R.Yafaev
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### A Robin-Neumann problem in bounded domains with splitting boundary. (English)Zbl 0688.35019

Reviewer: S.Zanfir
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