Results 51 to 60 of about 2,300,828 (212)

A fundamental solution to the CCC equations [PDF]

open access: yesGeneral Relativity and Gravitation, 2014
We display a simple solution to the Penrose CCC scenario. For this solution we chose for the late stages of the previous aeon a FRW, k=0, universe with a both a cosmological constant and radiation (no mass) while for the early stages of the 'present' aeon we have again a FRW universe, k=0, with the same cosmological constant and again with radiation ...
openaire   +2 more sources

Fundamental Solutions in the Generalized Theory of Thermoelastic Diffusion with Triple Porosity

open access: yesEngineering Transactions, 2023
The main aim of this paper is to derive the basic governing equations for an anisotropic thermoelastic medium with mass diffusion and triple porosity.
Tarun KANSAL
doaj   +1 more source

Supersymmetry, Duality and Bound States [PDF]

open access: yes, 1996
$P$-brane solutions of low-energy string actions have traditionally provided the first evidence for the existence of string dualities, in which fundamental and solitonic $p$-branes are identified with perturbative and non-perturbative BPS states. In this
Khuri, Ramzi R.
core   +1 more source

Fundamental solutions for the new coupled Konno-Oono equation in magnetic field

open access: yesResults in Physics, 2020
We implement an efficient solver to retrieve solutions to the nonlinear new coupled Konno–Oono (CKO) equation. This solver presents the closed form of solutions.
Mahmoud A.E. Abdelrahman   +1 more
doaj   +1 more source

Transport in nanopores and nanochannels: some fundamental challenges and nature-inspired solutions

open access: yesMaterials Today Advances, 2020
The field of solid-state nanopores and nanochannels has grown exponentially in the past five years. Recent advances have greatly broadened the spectrum of available gating stimuli, expanded applications in sensing, energy conversion, and separation ...
Y.A. Perez Sirkin   +2 more
doaj   +1 more source

Tachyon Tube and Supertube

open access: yes, 2003
We search for tubular solutions in unstable D3-brane. With critical electric field E=1, solutions representing supertubes, which are supersymmetric bound states of fundamental strings, D0-branes, and a cylindrical D2-brane, are found and shown to exhibit
A. Sen   +38 more
core   +2 more sources

Fundamental solutions for the Tricomi operator, II [PDF]

open access: yesDuke Mathematical Journal, 2002
We explicitly calculate fundamental solutions for the Tricomi operator relative to a point in the hyperbolic region and show that these solutions originate from the hypergeometric function F(1/6,1/6;1;z).
Barros-Neto, J., Gelfand, I. M.
openaire   +4 more sources

Solution for (1+1) dimensional surface solitons in thermal nonlinear media

open access: yes, 2011
Analytical solutions for (1+1)D surface fundamental solitons in thermal nonlinear media are obtained. The stationary position and the critical power of surface solitons are obtained using this analytical solutions.
Guo, Qi   +4 more
core   +1 more source

The Dirichlet problem for the generalized bi-axially symmetric Helmholtz equation [PDF]

open access: yes, 2014
In [18], fundamental solutions for the generalized bi-axially symmetric Helmholtz equation were constructed in $R_2^ + = \left\{ {\left( {x,y} \right):x > 0,y > 0} \right\}.$ They contain Kummer's confluent hypergeometric functions in three variables. In
Hasanov, Anvar, Salakhitdinov, M. S.
core  

On Fundamental Solutions of Elliptic Equations [PDF]

open access: yesProceedings of the American Mathematical Society, 1961
In this paper we prove: Let L be an elliptic operator in (x, t) with constant coefficients, the coefficients of the lower derivatives being zero, and let Lo be the operator obtained from L by deleting all the terms involving t-derivatives. Let K(x, t) be a fundamental solution of Lu = 0.
openaire   +2 more sources

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