Results 1 to 10 of about 31,891 (82)

A generalisation of the Malgrange–Ehrenpreis theorem to find fundamental solutions to fractional PDEs [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
We present and prove a new generalisation of the Malgrange–Ehrenpreis theorem to fractional partial differential equations, which can be used to construct fundamental solutions to all partial differential operators of rational order and many of arbitrary
Dumitru Baleanu, Arran Fernandez
doaj   +5 more sources

Strain gradient elasticity within the symmetric BEM formulation [PDF]

open access: yesFracture and Structural Integrity, 2014
The symmetric Galerkin Boundary Element Method is used to address a class of strain gradient elastic materials featured by a free energy function of the (classical) strain and of its (first) gradient.
S. Terravecchia   +2 more
doaj   +2 more sources

KoopmanLab: Machine learning for solving complex physics equations

open access: yesAPL Machine Learning, 2023
Numerous physics theories are rooted in partial differential equations (PDEs). However, the increasingly intricate physics equations, especially those that lack analytic solutions or closed forms, have impeded the further development of physics ...
Wei Xiong   +5 more
doaj   +1 more source

Discrete Fundamental Solution Preconditioning for Hyperbolic Systems of PDE [PDF]

open access: yesJournal of Scientific Computing, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Henrik Brandén   +2 more
openaire   +1 more source

Fundamental Solutions for a Family of Sub-elliptic PDEs [PDF]

open access: yesPure and Applied Mathematics Quarterly, 2007
In this article, we survey the behavior of the subRiemannian geodesics induced by a family of sub-elliptic partial differential equations, especially the sub-Laplacian on the Heisenberg group. In particular, we discuss the complex action function and volume element along the geodesics.
Ovidiu Calin   +2 more
openaire   +1 more source

Physics-informed attention-based neural network for hyperbolic partial differential equations: application to the Buckley–Leverett problem

open access: yesScientific Reports, 2022
Physics-informed neural networks (PINNs) have enabled significant improvements in modelling physical processes described by partial differential equations (PDEs) and are in principle capable of modeling a large variety of differential equations.
Ruben Rodriguez-Torrado   +6 more
doaj   +1 more source

Fundamental Solution for Cauchy Initial Value Problem for Parabolic PDEs with Discontinuous Unbounded First-Order Coefficient at the Origin. Extension of the Classical Parametrix Method [PDF]

open access: yesActa Applicandae Mathematicae, 2020
We prove the existence of a fundamental solution of the Cauchy initial boundary value problem on the whole space for a parabolic partial differential equation with discontinuous unbounded first-order coefficient at the origin. We establish also non-asymptotic, rapidly decreasing at infinity, upper and lower estimates for the fundamental solution.
Formica M. R., Ostrovsky E., Sirota L.
openaire   +3 more sources

Thermal analysis of Williamson fluid flow with Lorentz force on the stretching plate

open access: yesCase Studies in Thermal Engineering, 2022
This study is dedicated to the semi-analytical solution of the problem by managing the inclined Lorentz force and variable viscosity impacts on Williamson nanofluid as visco-inelastic fluids on a stretching plate.
Bahram Jalili   +4 more
doaj   +1 more source

Convergence analysis of the scaled boundary finite element method for the Laplace equation [PDF]

open access: yes, 2020
The scaled boundary finite element method (SBFEM) is a relatively recent boundary element method that allows the approximation of solutions to PDEs without the need of a fundamental solution.
Bertrand, Fleurianne   +2 more
core   +2 more sources

Dual Solutions of Unsteady Mixed Convection Hybrid Nanofluid Flow Past a Vertical Riga Plate with Radiation Effect

open access: yesMathematics, 2023
A mathematical model for the unsteady, two-dimensional mixed convection stagnation point flow over a Riga plate is presented in this study. Convective boundary conditions, time-dependent derivatives, mixed convection, radiation effects, and the Grinberg ...
Rusya Iryanti Yahaya   +4 more
doaj   +1 more source

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