Results 51 to 60 of about 1,052 (144)

Transformation of p-gradient flows to p′-gradient flows in metric spaces

open access: yesAnalysis and Geometry in Metric Spaces
We explicitly construct parameter transformations between gradient flows in metric spaces, called curves of maximal slope, having different exponents when the associated function and the associated metric space satisfy a suitable convexity condition ...
Shimoyama Sho
doaj   +1 more source

Closed-form solutions to the conformable space-time fractional simplified MCH equation and time fractional Phi-4 equation

open access: yesResults in Physics, 2020
The time-fractional problem is a class of important models to represent the real phenomena. We construct new solitary waves for the space-time fractional simplified modified Camassa-Holm (MCH) and the time fractional Phi-4 equations using the unified ...
Mahmoud A.E. Abdelrahman   +1 more
doaj   +1 more source

Uniform Central Limit Theorem for martingales [PDF]

open access: yes, 2014
We study some sufficient conditions imposed on the sequence of martingale differences (m.d.) in the separable Banach spaces of continuous functions defined on the metric compact set for the Central Limit Theorem in this space.
Sirota, L.
core  

A Comparative Study of the Pendulum Equation Using Two Analytical Methods

open access: yesJournal of Mathematics, Volume 2024, Issue 1, 2024.
This paper presents a comprehensive comparison between the modified harmonic balance method (MHBM) and He’s frequency formulation (HFF) for solving the nonlinear dynamics of an excited pendulum constrained by a crank‐shaft‐slider mechanism (CSSM).
Nazmul Sharif   +2 more
wiley   +1 more source

A model of competing species that exhibits zip bifurcation

open access: yesRevista Integración, 2017
The purpose of this paper is to present a concrete model of competing population species that exhibits a phenomenon called zip bifurcation. The Zip Bifurcation was introduced by Farkas in 1984 for a three dimensional ODE prey-predator system describing a
Luis F. Echeverri   +2 more
doaj   +1 more source

Dynamics of particulate emissions in the presence of autonomous vehicles

open access: yesOpen Mathematics
Around one third of CO2{{\rm{CO}}}_{2} emissions in the atmosphere are linked to vehicular traffic. Pollutant agents have an impact on the environment, in particular, the increased presence of particulate matter (PM) creates negative effects on human ...
Briani Maya   +3 more
doaj   +1 more source

Friedmann equations as n-dimensional dynamical system

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
In this paper we study dynamics of the standard cosmological model of the universe assuming that it is filled with n types of non-interacting barotropic perfect fluids.
Branković Danijela
doaj   +1 more source

On the existence of new integrable cases for Euler-Poisson equations in Newtonian fields

open access: yesAlexandria Engineering Journal, 2019
In this article, the rotational motion of a non-symmetric rigid body about a fixed point under the action of multi-Newtonian centers located on one fixed axis is considered.
Mohamed El-Borhamy
doaj   +1 more source

Normal forms of piecewise-smooth monodromic systems

open access: yesAdvances in Nonlinear Analysis
Normal form is an important tool in the study of bifurcations but, unlike those for smooth differential systems, normal forms for piecewise-smooth systems have difficulty with the near-identity transformation, which is constructed piecewise but needs to ...
Li Jiahao, Chen Xingwu, Zhang Weinian
doaj   +1 more source

Cheng Equation: A Revisit Through Symmetry Analysis

open access: yes, 2019
The symmetry analysis of the Cheng Equation is performed. The Cheng Equation is reduced to a first-order equation of either Abel's Equations, the analytic solution of which is given in terms of special functions.
Halder, Amlan K   +3 more
core  

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