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Symmetry Properties of Autonomous Integrating Factors [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2005
We study the symmetry properties of autonomous integrating factors from an algebraic point of view. The symmetries are delineated for the resulting integrals treated as equations and symmetries of the integrals treated as functions or configurational ...
Sibusiso Moyo, P.G.L. Leach
doaj   +5 more sources

Rehabilitation strategies for long COVID: integrating human factors engineering [PDF]

open access: yesFrontiers in Rehabilitation Sciences
Long COVID presents unique challenges that extend beyond conventional biomedical rehabilitation, necessitating strategies that are adaptive, multidisciplinary, and patient-centered.
Tzu-Sui Hung
doaj   +2 more sources

A Survey on the Inverse Integrating Factor [PDF]

open access: yesQualitative Theory of Dynamical Systems, 2010
The relation between limit cycles of planar differential systems and the inverse integrating factor was first shown in an article of Giacomini, Llibre and Viano appeared in 1996. From that moment on, many research articles are devoted to the study of the properties of the inverse integrating factor and its relation with limit cycles and their ...
Maite Grau, Isaac A García
exaly   +5 more sources

Symmetries and Integrating Factors [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Leach, P. G. L., Bouquet, S. É.
openaire   +2 more sources

λ-Symmetry and μ-Symmetry Reductions and Invariant Solutions of Four Nonlinear Differential Equations

open access: yesMathematics, 2020
On one hand, we construct λ-symmetries and their corresponding integrating factors and invariant solutions for two kinds of ordinary differential equations.
Yu-Shan Bai, Jian-Ting Pei, Wen-Xiu Ma
doaj   +1 more source

Point-of-interest recommendation algorithm integrating multiple impact factors

open access: yesJournal of Hebei University of Science and Technology, 2020
In order to solve the problem of data sparseness in the task of point-of-interest recommendation and make full use of the diverse information in the location-based social network to further improve the quality of personalized recommendation, a point-of ...
Huicong WU   +3 more
doaj   +1 more source

Numerical solution of first-order exact differential equations by the integrating factor method [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
A numerical algorithm for solving exact differential equations is proposed, based both on the efficient calculation of integrating factors and on a ''new'' numerical method for integrating functions.
Sevastianov, Leonid A.   +3 more
doaj   +1 more source

Integrating InSAR Observables and Multiple Geological Factors for Landslide Susceptibility Assessment

open access: yesApplied Sciences, 2021
Due to extreme weather, researchers are constantly putting their focus on prevention and mitigation for the impact of disasters in order to reduce the loss of life and property.
Yan-Ting Lin   +4 more
doaj   +1 more source

Finding Liouvillian first integrals of rational ODEs of any order in finite terms [PDF]

open access: yes, 2005
It is known, due to Mordukhai-Boltovski, Ritt, Prelle, Singer, Christopher and others, that if a given rational ODE has a Liouvillian first integral then the corresponding integrating factor of the ODE must be of a very special form of a product of ...
Kosovtsov, Yuri N.
core   +5 more sources

Explicit Solutions for the (2 + 1)-Dimensional Jaulent–Miodek Equation Using the Integrating Factors Method in an Unbounded Domain

open access: yesMathematical and Computational Applications, 2018
In this work, we prove that the integrating factors can be used as a reduction method. Analytical solutions of the Jaulent–Miodek (JM) equation are obtained using integrating factors as an extension of a recent work where, through hidden symmetries, the ...
Rahma Sadat, Magda Kassem
doaj   +1 more source

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