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Useful Results for the Qualitative Analysis of Generalized Hattaf Mixed Fractional Differential Equations with Applications to Medicine

open access: yesComputation
Most solutions of fractional differential equations (FDEs) that model real-world phenomena in various fields of science, industry, and engineering are complex and cannot be solved analytically.
Khalid Hattaf
doaj   +1 more source

Comparison Principle for a Generalized Fast Marching Method [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2009
In \cite{CFFM06}, the authors have proposed a generalization of the classical Fast Marching Method of Sethian for the eikonal equation in the case where the normal velocity depends on space and time and can change sign. The goal of this paper is to propose a modified version of the Generalized Fast Marching Method proposed in \cite{CFFM06} for which we
openaire   +3 more sources

Note on a role for entire functions of the classes P and P*

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1981
We use the B and B* operators of Levin on the Classes P and P* and a comparison principle to prove a Gauss-Lucas Theorem for differential operators. The connection with the determination of final sets for differential operators is then clarified.
C. L. Prather
doaj   +1 more source

Comparison of Bayesian-Utilitarian and Maximin Principle Approaches

open access: yesHuman and Ecological Risk Assessment: An International Journal, 2005
The Precautionary Principle implies the adoption of a set of rules aimed at avoiding possible future harm associated with suspected, but not ascertained, risk factors. Several philosophical, economical and societal questions are implied by precaution-based public health decision making.
Pietro Comba   +2 more
openaire   +3 more sources

On the Keldys-Fichera boundary-value problem for degenerate quasilinear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2002
We prove existence and uniqueness theorems for the Keldys-Fichera boundary-value problem using pseudo-monotone operators. The equation studied here is quasilinear, elliptic, and its set of degenerate points may be of non-zero measure.
Zu-Chi Chen, Benjin Xuan
doaj  

Parabolic Biased Infinity Laplacian Equation Related to the Biased Tug-of-War

open access: yesAdvanced Nonlinear Studies, 2019
In this paper, we study the parabolic inhomogeneous β-biased infinity Laplacian equation arising from the β-biased tug-of ...
Liu Fang, Jiang Feida
doaj   +1 more source

The comparison of various club guessing principles

open access: yesAnnals of Pure and Applied Logic, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Qualitative analysis of a system of non-homogeneous doubly nonlinear parabolic equations

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
We consider the qualitative properties of solutions to a coupled system of nonhomogeneous doubly nonlinear parabolic equations on the whole line with an exponentially varying density.
M.M. Aripov   +4 more
doaj   +1 more source

Existence and regularity of weak solutions for singular elliptic problems

open access: yesElectronic Journal of Differential Equations, 2015
In this article we study the semilinear singular elliptic problem $$\displaylines{ -\Delta u = \frac{p(x)}{u^{\alpha}}\quad \text{in } \Omega \cr u = 0\quad \text{on } \partial\Omega,\quad u>0 \text{ in } \Omega, }$$ where $\Omega$ is a regular ...
Brahim Bougherara   +2 more
doaj  

Solutions to nonlinear elliptic equations with a nonlocal boundary condition

open access: yesElectronic Journal of Differential Equations, 2002
We study an elliptic equation and its evolution problem on a bounded domain with nonlocal boundary conditions. Eigenvalue problems, existence, and dynamic behavior of solutions for linear and semilinear equations are investigated.
Yuandi Wang
doaj  

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