Results 21 to 30 of about 2,925,666 (285)

A Fast Singular Boundary Method for the Acoustic Design Sensitivity Analysis of Arbitrary Two- and Three-Dimensional Structures

open access: yesMathematics, 2022
This paper proposes a fast meshless scheme for acoustic sensitivity analysis by using the Burton–Miller-type singular boundary method (BM-SBM) and recursive skeletonization factorization (RSF).
Liyuan Lan   +5 more
doaj   +1 more source

Three-dimensional fundamental solution in transversely isotropic thermoelastic diffusion material [PDF]

open access: yesTheoretical and Applied Mechanics, 2012
The aim of the present investigation is to study the fundamental solution for three dimensional problem in transversely isotropic thermoelastic diffusion medium. After applying the dimensionless quantities, two displacement functions are introduced to
Kumar Rajneesh, Chawla Vijay
doaj   +1 more source

Investigation of the Boundary Layers of the Singular Perturbation Problem Including the Cauchy-Euler Differential Equation [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2021
‎In this paper‎, ‎for a singular perturbation problem consist of the Cauchy-Euler equation with local and non-local boundary conditions‎. ‎We investigate the condition of the self-adjoint and the non-self-adjoint‎, ‎also look for the formation or non ...
Alireza Sarakhsi, Siamak Ashrafi
doaj   +1 more source

Opposite Antipodal Fundamental Solution of Laplace's Equation in Hyperspherical Geometry [PDF]

open access: yes, 2011
Due to the isotropy of $d$-dimensional hyperspherical space, one expects there to exist a spherically symmetric opposite antipodal fundamental solution for its corresponding Laplace-Beltrami operator.
Cohl, Howard S.
core   +3 more sources

On fundamental matrix solutions [PDF]

open access: yesProceedings of the American Mathematical Society, 1954
(1) l[y] -y'A(x)y = 0, s[y] My(a) + Ny(b) = 0, can be represented in terms of the Green's matrix of the system, or in terms of a special generalized Green's matrix in case the system (1) is compatible. For the system (1), A (x) is an n Xn matrix of complex-valued continuous functions of the real variable x on the finite interval a
openaire   +2 more sources

Recurrence of the random process governed with the fractional Laplacian and the Caputo time derivative

open access: yesBruno Pini Mathematical Analysis Seminar, 2023
We are addressing a parabolic equation with fractional derivatives in time and space that governs the scaling limit of continuous-time random walks with anomalous diffusion. For these equations, the fundamental solution represents the probability density
Elisa Affili, Jukka T. Kemppainen
doaj   +1 more source

On a problem of S.L. Sobolev [PDF]

open access: yes, 2015
In 1930 Sergey L. Sobolev [7,8] has proposed a construction of the solution of the Cauchy problem for the hyperbolic equation of the second order with variable coefficients in 3-d.
Klibanov, Michael V.
core   +1 more source

Local Polya fluctuations of Riesz gravitational fields and the Cauchy problem

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2023
We consider a pseudodifferential equation of parabolic type with a fractional power of the Laplace operator of order $\alpha\in(0;1)$ acting with respect to the spatial variable.
V.A. Litovchenko
doaj   +1 more source

Fundamental solutions in the Colombeau framework: applications to solvability and regularity theory [PDF]

open access: yes, 2007
In this article we introduce the notion of fundamental solution in the Colombeau context as an element of the dual $\LL(\Gc(\R^n),\wt{\C})$. After having proved the existence of a fundamental solution for a large class of partial differential operators ...
Garetto, Claudia
core   +3 more sources

On the Behaviour at Infinity of Solutions to Nonlocal Parabolic Type Problems

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
The paper deals with possible behaviour at infinity of solutions to the Cauchy problem for a parabolic type equation whose elliptic part is the generator of a Markov jump process , i.e. a nonlocal diffusion operator.
Е. А. Zhizhina, А. L. Piatnitski
doaj   +1 more source

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