Results 91 to 100 of about 182,959 (213)

Localized direct boundary-domain integro-differential formulations for incremental elasto-plasticity of inhomogeneous body

open access: yes, 2006
A quasi-static mixed boundary value problem of incremental elasto-plasticity for a continuously inhomogeneous body is considered. Using the two-operator Green–Betti formula and the fundamental solution of a reference homogeneous linear elasticity problem,
Mikhailov, SE
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Conjugacy criteria for half-linear differential equations [PDF]

open access: yes, 1999
summary:Sufficient conditions on the function $c(t)$ ensuring that the half-linear second order differential equation \[ (|u^\prime |^{p-2} u^\prime )^\prime + c(t)|u(t)|^{p-2} u(t)=0\,, \quad \quad p>1 \] possesses a nontrivial solution having at least ...
Peňa, Simón
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Delay differential equation models for real-time dynamic substructuring

open access: yes, 2005
Real-time dynamic substructuring is a testing technique that models an entire system through the combination of an experimental test piece, representing part of the system, with a numerical model of the rest of the system.
Wagg, DJ   +4 more
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Linear and Nonlinear Perturbed Wave Equations

open access: yes, 2008
We consider several Cauchy problems for the wave equation with some perturbation. First of all, we consider the wave equation with a metric perturbation, that is, we consider the d'Alembert operator in the Schwarzschild metric (which is a model for a ...
CATANIA, DAVIDE
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On the differential invariants of a linear ordinary differential equation

open access: yes, 1981
SynopsisLet y(n) + a1y(n−1 +…+ an−1y(1) + an = 0 (*) be a linear ordinary differential equation of order n. A (relative) differential invariant of (*) is a differential polynomial function π(xi) defined on the solution space of (*) satisfying: there is ...
Gian-Carlo Rota, Joseph P. S. Kung
core   +1 more source

When is a Stokes line not a Stokes line?

open access: yes, 2005
During the course of a Stokes phenomenon, an asymptotic expansion can change its form as a further series, prefactored by an exponentially small term and a Stokes multiplier, appears in the representation.
Langman, Philip J, Langman, Philip J.
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Differential Equations Third Order Inhomogeneous Linear with Boundary Conditions [PDF]

open access: yes
Considering the importance of teaching linear differential equations, it can be said that every physical and technical phenomenon, which is expressed and modeled in mathematical sciences, is a differential equation.
Ghulam Hazrat, Aimal Rasa
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One dimensional parabolic free boundary problems

open access: yes, 1975
The method of lines is used to approximate explicit and implicit free boundary problems for a linear one dimensional diffusion equation with a sequence of free boundary problems for ordinary differential equations.
Meyer, G H
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Mesh-based numerical implementation of the localized boundary-domain integral equation method to a variable-coefficient Neumann problem

open access: yes, 2005
An implementation of the localized boundary-domain integral-equation (LBDIE) method for the numerical solution of the Neumann boundary-value problem for a second-order linear elliptic PDE with variable coefficient is discussed.
Mikhailov, SE, Nakhova, IS
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Nonnegativity of functionals corresponding to the second order half-linear differential equation [PDF]

open access: yes, 1999
summary:In this paper we study extremal properties of functional associated with the half–linear second order differential equation E$_p$. Necessary and sufficient condition for nonnegativity of this functional is given in two special cases: the first ...
Mařík, Robert
core  

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