Results 31 to 40 of about 889,948 (287)

Perfect simulation of autoregressive models with infinite memory [PDF]

open access: yes, 2012
In this paper we consider the problem of determining the law of binary stochastic processes from transition kernels depending on the whole past. These kernels are linear in the past values of the process. They are allowed to assume values close to both 0
De Santis, Emilio, Piccioni, Mauro
core   +1 more source

Solutions of fractional nabla difference equations - existence and uniqueness [PDF]

open access: yesOpuscula Mathematica, 2016
In this article, we discuss existence, uniqueness and dependency of solutions of nonlinear fractional nabla difference equations in a Banach space equipped with a suitable norm, using the contractive mapping approach. As an application of the established
Jagan Mohan Jonnalagadda
doaj   +1 more source

Existence, uniqueness, approximation of solutions and Ealpha-Ulam stability results for a class of nonlinear fractional differential equations involving psi-Caputo derivative with initial conditions [PDF]

open access: yesMathematica Moravica, 2021
The main purpose of this paper is to study the existence, uniqueness, Ea-Ulam stability results, and other properties of solutions for certain classes of nonlinear fractional differential equations involving the ps-Caputo derivative with initial ...
Derbazi Choukri   +3 more
doaj   +1 more source

Uniqueness and non-uniqueness of static vacuum black holes in higher dimensions [PDF]

open access: yes, 2002
We prove the uniqueness theorem for asymptotically flat static vacuum black hole solutions in higher dimensional space-times. We also construct infinitely many non-asymptotically flat regular static black holes on the same spacetime manifold with the ...
A. K. M. Masood-ul-Alam   +25 more
core   +4 more sources

Nonlocal Coupled System for (k,φ)-Hilfer Fractional Differential Equations

open access: yesFractal and Fractional, 2022
In this paper, we study a coupled system consisting of (k,φ)-Hilfer fractional differential equations of the order (1,2], supplemented with nonlocal coupled multi-point boundary conditions.
Ayub Samadi   +2 more
doaj   +1 more source

GR uniqueness and deformations [PDF]

open access: yes, 2015
In the metric formulation gravitons are described with the parity symmetric $S_+^2\otimes S_-^2$ representation of Lorentz group. General Relativity is then the unique theory of interacting gravitons with second order field equations.
Krasnov, Kirill
core   +1 more source

Existence and stability analysis of nonlinear sequential coupled system of Caputo fractional differential equations with integral boundary conditions

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2019
In this paper we study existence and uniqueness of solutions for a coupled system consisting of fractional differential equations of Caputo type, subject to Riemann–Liouville fractional integral boundary conditions.
Akbar Zada , Muhammad Yar, Tongxing Li
doaj   +1 more source

Uniqueness and non-uniqueness in percolation theory

open access: yes, 2005
This paper is an up-to-date introduction to the problem of uniqueness versus non-uniqueness of infinite clusters for percolation on ${\mathbb{Z}}^d$ and, more generally, on transitive graphs.
Häggström, Olle, Jonasson, Johan
core   +2 more sources

On the theory of the known inverse problems for the heat transfer equation

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2019
The inverse problems for finding the initial condition and the right-hand side were studied for the heat transfer equation. A solution of the initial boundary value problem for the inhomogeneous heat transfer equation with sufficient conditions for the ...
K.B. Sabitov, A.R. Zaynullov
doaj   +1 more source

Uniqueness for inverse problems of determining orders of multi-term time-fractional derivatives of diffusion equation

open access: yes, 2014
This article proves the uniqueness for two kinds of inverse problems of identifying fractional orders in diffusion equations with multiple time-fractional derivatives by pointwise observation. By means of eigenfunction expansion and Laplace transform, we
Li, Zhiyuan, Yamamoto, Masahiro
core   +1 more source

Home - About - Disclaimer - Privacy