Results 31 to 40 of about 15,808 (165)

On a Wick-type stochastic parabolic equations with random potentials

open access: yesPartial Differential Equations in Applied Mathematics, 2023
Stochastic parabolic equations with random potentials, where the Wick product is used to give sense to the product of generalized stochastic processes, are considered.
Snežana Gordić   +2 more
doaj   +1 more source

The Asymmetric Bimodal Normal Distribution: A Tractable Mixture Model for Skewed and Bimodal Data

open access: yesMathematics
We study a parsimonious constrained two-component Gaussian mixture with symmetric locations ±λ and unequal weights controlled by α∈[−1,1]; we refer to this family as the asymmetric bimodal normal.
Hassan S. Bakouch   +5 more
doaj   +1 more source

Quantum-Gravity Stochastic Effects on the de Sitter Event Horizon

open access: yesEntropy, 2020
The stochastic character of the cosmological constant arising from the non-linear quantum-vacuum Bohm interaction in the framework of the manifestly-covariant theory of quantum gravity (CQG theory) is pointed out.
Claudio Cremaschini, Massimo Tessarotto
doaj   +1 more source

Variant Poisson Item Count Technique with Non-Compliance

open access: yesMathematics
In this article, we propose a variant Poisson item count technique (VPICT) that explicitly accounts for respondent non-compliance in surveys involving sensitive questions.
Man-Lai Tang   +3 more
doaj   +1 more source

Generation Capacity Expansion Planning Considering Hourly Dynamics of Renewable Resources

open access: yesEnergies, 2020
As more generation capacity using renewable sources is accommodated in the power system, methods to represent the uncertainty of renewable sources become more important, and stochastic models with different methods for uncertainty representation are ...
Heejung Park
doaj   +1 more source

Rotational Representations of Stochastic Matrices

open access: yesThe Annals of Probability, 1985
Let \(P=(p_{ij})\) be an \(n\times n\) stochastic matrix with a positive stationary row eigenvector \(\pi =(\pi_ 1,\pi_ 2,...,\pi_ n)\). Let J be a partition of the unit circle into sets \(J_ 1,J_ 2,...,J_ n\) with \(m(J_ i)=\pi_ i\), where m is the Lebesgue measure. Let \(f_ t(x)\) indicate a rotation through distance t. It has been shown that for any
openaire   +3 more sources

Interconnection between Wick multiplication and integration on spaces of nonregular generalized functions in the Lévy white noise analysis

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
We deal with spaces of nonregular generalized functions in the Lévy white noise analysis, which are constructed using Lytvynov's generalization of a chaotic representation property.
N.A. Kachanovsky, T.O. Kachanovska
doaj   +1 more source

Novel analytical solutions of stochastic Ginzburg-Landau equation driven by Wiener process via the improved modified extended tanh function method

open access: yesAlexandria Engineering Journal, 2023
In this manuscript, the improved modified extended tanh integration technique is implemented to investigate the exact solutions of stochastic Ginzburg–Landau model driven by Wiener process which appeared in various fields of chemistry, mathematics and ...
Yazid Alhojilan, Hamdy M. Ahmed
doaj   +1 more source

Infinite-dimensional Lie Algebras, Representations, Hermitian Duality and the Operators of Stochastic Calculus

open access: yesAxioms, 2016
We study densely defined unbounded operators acting between different Hilbert spaces. For these, we introduce a notion of symmetric (closable) pairs of operators.
Palle Jorgensen, Feng Tian
doaj   +1 more source

Controllability of Fractional Stochastic Delay Systems Driven by the Rosenblatt Process

open access: yesFractal and Fractional, 2022
In this work, we consider linear and nonlinear fractional stochastic delay systems driven by the Rosenblatt process. With the aid of the delayed Mittag-Leffler matrix functions and the representation of solutions of these systems, we derive the ...
Barakah Almarri, Ahmed M. Elshenhab
doaj   +1 more source

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