Results 31 to 40 of about 780,879 (337)

Solvability of a Fourth-Order Boundary Value Problem with Integral Boundary Conditions

open access: yesJournal of Applied Mathematics, 2013
We investigate the existence of solutions and positive solutions for a nonlinear fourth-order differential equation with integral boundary conditions of the form x(4)(t)=f(t,x(t),x′(t),x′′(t),x′′′(t)), t∈[0,1], x(0)=x′(1)=0, x′′(0)=∫01h(s,x(s),x′(s),x ...
Hui Li, Libo Wang, Minghe Pei
doaj   +1 more source

Parametrization for non-linear problems with integral boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
We consider the integral boundary-value problem for a certain class of non-linear system of ordinary differential equations of the form \begin{equation*} \frac{dx\left(t\right)}{dt} =f\left(t,x\left(t\right)\right), t\in \left[0,T\right],\: x\in \mathbb ...
Miklós Rontó, Kateryna Marynets
doaj   +1 more source

Analysis of Two-Dimensional Heat Transfer Problem Using the Boundary Integral Equation

open access: yesAdvances in Mathematical Physics, 2022
In this paper, we examine the problem of two-dimensional heat equations with certain initial and boundary conditions being considered. In a two-dimensional heat transport problem, the boundary integral equation technique was applied.
Nimona Ketema Kebeba, Gizaw Debito Haifo
doaj   +1 more source

Nonlinear differential equations with perturbed Dirichlet integral boundary conditions

open access: yesBoundary Value Problems, 2021
This paper is devoted to prove the existence of positive solutions of a second order differential equation with a nonhomogeneous Dirichlet conditions given by a parameter dependence integral.
Alberto Cabada, Javier Iglesias
doaj   +1 more source

On the Volterra property of a boundary problem with integral gluing condition for mixed parabolic-hyperbolic equation [PDF]

open access: yes, 2013
In the present work we consider a boundary value problem with gluing conditions of integral form for parabolic-hyperbolic type equation. We prove that the considered problem has the Volterra property.
Akhtaeva, N. S.   +3 more
core   +3 more sources

''New'' boundary conditions in integrable lattice models [PDF]

open access: yesProceedings of Non-perturbative Quantum Effects 2000 — PoS(tmr2000), 2000
4 pages, JHEP proceedings style, talk presented at the TMR conference ``Non-perturbative Quantum Effects 2000''
openaire   +2 more sources

No-Boundary Proposal as a Path Integral with Robin Boundary Conditions [PDF]

open access: yesPhysical Review Letters, 2019
Realising the no-boundary proposal of Hartle and Hawking as a consistent gravitational path integral has been a long-standing puzzle. In particular, it was demonstrated by Feldbrugge et al. that the sum over all universes starting from zero size results in an unstable saddle point geometry.
Di Tucci, Alice, Lehners, Jean-Luc
openaire   +4 more sources

Generalized quasilinearization method for nonlinear boundary value problems with integral boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2010
The quasilinearization method coupled with the method of upper and lower solutions is used for a class of nonlinear boundary value problems with integral boundary conditions. We obtain some less restrictive sufficient conditions under which corresponding
Li Sun, Mingru Zhou, Guangwa Wang
doaj   +1 more source

On the Coherent State Path Integral for Linear Systems [PDF]

open access: yes, 2005
We present a computation of the coherent state path integral for a generic linear system using ``functional methods'' (as opposed to discrete time approaches).
A. Albeverio   +9 more
core   +4 more sources

Path integrals and boundary conditions

open access: yes, 2006
The path integral approach to quantum mechanics provides a method of quantization of dynamical systems directly from the Lagrange formalism. In field theory the method presents some advantages over Hamiltonian quantization. The Lagrange formalism preserves relativistic covariance which makes the Feynman method very convenient to achieve the ...
Asorey, M., Ibort, A., Marmo, G.
openaire   +2 more sources

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