Results 71 to 80 of about 2,300,828 (212)

Lie Group Symmetries as Integral Transforms of Fundamental Solutions [PDF]

open access: yes
We obtain fundamental solutions for PDEs of the form ut = x uxx +f(x)ux ??xru by showing that if the symmetry group of the PDE is nontrivial, it contains a standard integral transform of the fundamental solution. We show that in this case, the problem of
Kelly A Lennox, Mark Craddock
core  

Fundamental solutions and eigenfunction expansions for Schr�dinger operators I. Fundamental solutions

open access: yesMathematische Zeitschrift, 1988
This is the first part of a series of papers dealing with eigenfunction expansions for the Schrödinger operator \(H=H_ 0+V(x)\), \(H_ 0=- \Delta /2\), where we assume V(x)\(\in {\mathcal B}^{\infty}(R^ n)\) is real-valued, \({\mathcal B}^{\infty}(R^ n)\) denoting the space of smooth functions on \(R^ n\) with bounded derivatives. In this part, we first
openaire   +1 more source

On the Fundamental Solutions to Stokes Equations

open access: yesJournal of Differential Equations, 1999
The author studies the behaviour of solutions to the stationary Stokes equations which have an isolated singularity. By using the power series expansions of harmonic and biharmonic functions one can describe the precise structure of solutions near singular points.
openaire   +1 more source

Fundamental solutions of two multidimensional elliptic equations

open access: yesElectronic Journal of Differential Equations, 2018
We construct fundamental solutions for two-multidimensional elliptic equations. The solutions are written in explicit form via hypergeometric Gauss functions for $\lambda=0$ and via confluent Horn functions for $\lambda\neq 0$. It is proved that the
Ilnur Garipov, Rinat Mavlyaviev
doaj  

Fundamental solutions and harmonic analysis on nilpotent groups [PDF]

open access: diamond, 1990
Alexander Nagel   +2 more
openalex   +1 more source

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