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Maximum principles for nonlocal parabolic Waldenfels operators [PDF]

open access: diamondBulletin of Mathematical Sciences, 2019
As a class of Lévy type Markov generators, nonlocal Waldenfels operators appear naturally in the context of investigating stochastic dynamics under Lévy fluctuations and constructing Markov processes with boundary conditions (in particular the ...
Qiao Huang, Jinqiao Duan, Jiang-Lun Wu
doaj   +6 more sources

Remarks relevant to classical maximum principles [PDF]

open access: goldJournal of Applied Mathematics, 2005
We extend, sharpen, or give independent proofs of classical maximum principles. We also concentrate on maximum principles for equations of higher order. All proofs (except for one) are derived via comparison principles.
Cristian-Paul Danet
doaj   +2 more sources

Maximum principles for a family of nonlocal boundary value problems

open access: greenAdvances in Difference Equations, 2004
We study a family of three-point nonlocal boundary value problems (BVPs) for an nth-order linear forward difference equation. In particular, we obtain a maximum principle and determine sign properties of a corresponding Green function.
Paul W. Eloe
doaj   +3 more sources

Evolution of non-stationary processes and some maximum entropy principles [PDF]

open access: diamondAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
This paper studies, by using the speed-gradient principle, the evolution of non-stationary processes in the context of maximization of Varma, weighted Rényi, weighted Varma and Rényi-Tsallis of order α entropies.
Preda Vasile, Băncescu Irina
doaj   +2 more sources

Maximum Principles and Boundary Value Problems for First-Order Neutral Functional Differential Equations

open access: goldJournal of Inequalities and Applications, 2009
We obtain the maximum principles for the first-order neutral functional differential equation where , and are linear continuous operators, and are positive operators, is the space of continuous functions, and is the space of essentially ...
Domoshnitsky Alexander   +2 more
doaj   +2 more sources

Comprehensive Studies on Operational Principles for Maximum Power Point Tracking in Photovoltaic Systems [PDF]

open access: goldIEEE Access, 2019
Maximum power point tracking (MPPT) is essential in Photovoltaic (PV) systems, which has drawn significant research effort in the past. The operation is to adjust the power interfaces so that the operating characteristics of the consumption and the PV ...
Xingshuo Li   +3 more
doaj   +2 more sources

Maximum and antimaximum principles for the $p$-Laplacian with weighted Steklov boundary conditions

open access: diamondElectronic Journal of Differential Equations, 2020
We study the maximum and antimaximum principles for the p-Laplacian operator under Steklov boundary conditions with an indefinite weight $$\displaylines{ -\Delta_p u + |u|^{p-2}u = 0 \quad \text{in }\Omega, \cr |\nabla u|^{p-2}\frac{\partial u ...
Mabel Cuesta   +2 more
doaj   +3 more sources

Principal eigenvalues for k-Hessian operators by maximum principle methods

open access: yesMathematics in Engineering, 2021
For fully nonlinear $k$-Hessian operators on bounded strictly $(k-1)$-convex domains $\Omega$ of $\R^N$, a characterization of the principal eigenvalue associated to a $k$-convex and negative principal eigenfunction will be given as the supremum over ...
Isabeau Birindelli, Kevin R. Payne
doaj   +1 more source

Maximum Principles for Fractional Differential Inequalities with Prabhakar Derivative and Their Applications

open access: yesFractal and Fractional, 2022
This paper is devoted to studying a class of fractional differential equations (FDEs) with the Prabhakar fractional derivative of Caputo type in an analytical manner.
Mohammed Al-Refai   +2 more
doaj   +1 more source

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