Results 101 to 110 of about 11,399,904 (367)

The Dirichlet Problem for the Equation Δu−k2u=0 in the Exterior of Nonclosed Lipschitz Surfaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
We study the Dirichlet problem for the equation Δu−k2u=0 in the exterior of nonclosed Lipschitz surfaces in R3. The Dirichlet problem for the Laplace equation is a particular case of our problem. Theorems on existence and uniqueness of a weak solution of
P. A. Krutitskii
doaj   +1 more source

A Variational Formulation of European Option Prices in the 1‐Hypergeometric Stochastic Volatility Model

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The paper proposes a variational analysis of the 1‐hypergeometric stochastic volatility model for pricing European options. The methodology involves the derivation of estimates of the weak solution in a weighted Sobolev space. The weight is closely related to the stochastic volatility dynamic of the model.
José Da Fonseca, Wenjun Zhang
wiley   +1 more source

The non-linear Dirichlet problem and the CR Yamabe problem

open access: yesLe Matematiche, 1999
See directly the ...
Nicola Garofalo, dimiter Vassilev
doaj  

Multiple solutions of nonlinear boundary value problems with oscillatory solutions

open access: yesMathematical Modelling and Analysis, 2006
We consider two second order autonomous differential equations with critical points, which allow the detection of an exact number of solutions to the Dirichlet boundary value problem.
S. Ogorodnikova, F. Sadyrbaev
doaj   +1 more source

On Dirichlet's divisor problem [PDF]

open access: yesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1931
1. Let d ( n ) denote the number of divisors of the positive integer n , so that, if n = p 1 a 1 . . . p r
openaire   +3 more sources

On the Dirichlet problem for Monge-Ampère type equations [PDF]

open access: yes, 2013
In this paper, we prove second derivative estimates together with classical solvability for the Dirichlet problem of certain Monge-Ampére type equations under sharp hypotheses.
F. Jiang, N. Trudinger, Xiao-Ping Yang
semanticscholar   +1 more source

Image‐Based Flaw Identification Using Convolutional Neural Network

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Flaw detection in structures is crucial for ensuring structural integrity and safety across various engineering applications. Traditional nondestructive evaluation (NDE) techniques often face challenges in accurately identifying and characterizing flaws, particularly when dealing with complex geometries and strain fields.
Pugazhenthi Thananjayan   +2 more
wiley   +1 more source

Dirichlet problem for quasi-linear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2002
We study the Dirichlet Problem associated to the quasilinear elliptic problem $$ -sum_{i=1}^{n}frac{partial }{partial x_i}mathcal{A}_i(x,u(x), abla u(x))+mathcal{B}(x,u(x),abla u(x))=0.
Azeddine Baalal, Nedra Belhaj Rhouma
doaj  

Thermo‐Hydro‐Mechanical Behavior of Saturated Porous Media Under Non‐Isothermal Flow With Fine Particle Migration

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Clogging of reservoir formations, known as permeability damage, and wellbore clogging due to mobilization and straining of in situ fine particles are critical challenges in enhanced geothermal systems. This study presents a novel fully coupled thermo‐poro‐elastic model to predict the thermo‐hydro‐mechanical (THM) response of saturated porous ...
Xinle Zhai, Kamelia Atefi‐Monfared
wiley   +1 more source

A conservative numerical scheme for the multilayer shallow‐water equations on unstructured meshes

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
An energy‐conserving scheme is derived for the multilayer shallow water model, making use of the direct connection between energy conservation and the skew symmetry of the Poisson bracket for the model. A new mechanism is proposed to prevent layer interface outcropping.
Qingshan Chen
wiley   +1 more source

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