Results 21 to 30 of about 1,149 (127)
Results in Physics, 2021 We introduce a new stochastic robust solver to solve several classes of nonlinear stochastic partial differential equations (NSPDEs). This solver presents the closed formula for the stochastic solutions.
Yousef F. Alharbi +2 more
doaj +1 more source
Finding Liouvillian first integrals of rational ODEs of any order in finite terms [PDF]
, 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
Differential Equations & Applications, 2020 In Theorem 3 of [2] I included an extension to the Ascoli theorem. While the statement of the theorem and its later use were correct, the proof has a slight error which I noticed while in the process of writing a sequel.
John S. Spraker
semanticscholar +1 more source
Bosonization of World-Sheet Fermions in Minkowski Space-Time [PDF]
, 1995 We propose a way of bosonizing free world-sheet fermions for $4$-dimensional heterotic string theory formulated in Minkowski space-time. We discuss the differences as compared to the standard bosonization performed in Euclidean space-time.Comment: 1+9 ...
Andrea Pasquinucci +8 more
core +2 more sources
Homoclinic and heteroclinic solutions to a hepatitis C evolution model
Open Mathematics, 2018 Homoclinic and heteroclinic solutions to a standard hepatitis C virus (HCV) evolution model described by T. C. Reluga, H. Dahari and A. S. Perelson, (SIAM J. Appl. Math., 69 (2009), pp. 999–1023) are considered in this paper.
Telksnys Tadas +4 more
doaj +1 more source
On the Integrability of Liénard systems with a strong saddle [PDF]
, 2017 We study the local analytic integrability for real Li\'{e}nard systems, $\dot x=y-F(x),$ $\dot y= x$, with $F(0)=0$ but $F'(0)\ne0,$ which implies that it has a strong saddle at the origin.
Giné, Jaume, Llibre, Jaume
core +4 more sources
Positive solutions of fractional differential equations at resonance on the half-line
Boundary Value Problems, 2012 This article deals with the differential equations of fractional order on the half-line. By the recent Leggett-Williams norm-type theorem due to O’Regan and Zima, we present some new results on the existence of positive solutions for the fractional ...
Yi Chen, Xianhua Tang
semanticscholar +1 more source
Advances in Nonlinear Analysis, 2014 In this article we study the existence of positive periodic solutions for a fourth-order nonlinear neutral differential equation with variable delay.
Ardjouni Abdelouaheb +2 more
doaj +1 more source
The jump phenomenon associated with the dynamics of the duffing equation
Physics Open, 2020 The mathematical nature of the jump phenomenon associated with the damped, harmonically forced Duffing equation is investigated, as regards the amplitude of the harmonic response of the system.
M.P. Markakis
doaj +1 more source
A study on the transmission dynamics of COVID-19 considering the impact of asymptomatic infection
Journal of Biological Dynamics, 2023 The COVID-19 epidemic has been spreading around the world for nearly three years, and asymptomatic infections have exacerbated the spread of the epidemic.
Chuanqing Xu +7 more
doaj +1 more source