Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Najmeh Khajoei"'
This paper investigates the dynamics of discrete-time Rayleigh-Duffing oscillator by applying the forward Euler's scheme. It is shown that the system undergoes Hopf bifurcation and flip bifurcation by using the center manifold theorem and bifurcation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e8bddea71cf3ed17a1999f84c4a42ee
https://doi.org/10.21203/rs.3.rs-2949460/v1
https://doi.org/10.21203/rs.3.rs-2949460/v1
Autor:
Mohammad Reza Molaei, Najmeh Khajoei
Publikováno v:
Journal of Interdisciplinary Mathematics. 25:2127-2140
Publikováno v:
Repositorio Abierto de la UdL
Universitad de Lleida
Universitad de Lleida
In this work we study the global analytic integrability, Louville integrability and Puiseux integrability of the Tolman–Oppenheimer–Volkoff equation. The first author is partially supported by a MINECO/ FEDER, Spain Grant Number PID2020-113758GB-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f4d7a5da9a023a36e7ac76dbef80ee1
https://doi.org/10.1016/j.nonrwa.2022.103715
https://doi.org/10.1016/j.nonrwa.2022.103715
In this work the algebraic characterization of the Darboux, Liouville, and Puiseux first integrals of the vocal fold model is given. The multiple Puiseux solutions, also defined in Puiseux integrability, are studied for the first time. The first auth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4c248d75017682a07194bc20f1dd05f
https://repositori.udl.cat/handle/10459.1/463173
https://repositori.udl.cat/handle/10459.1/463173
Autor:
Mohammadreza Molaei, Najmeh Khajoei
Publikováno v:
Rendiconti del Circolo Matematico di Palermo Series 2. 70:1023-1035
In this paper, we find the normal forms of polynomial differential systems in $${\mathbb{R}}^3$$ which have at least three invariant algebraic surfaces. Also, we deduce the normal forms of polynomial differential systems in $${\mathbb{R}}^3$$ having
Autor:
Najmeh Khajoei
Publikováno v:
International Journal of Geometric Methods in Modern Physics. 18:2150165
In this paper, we investigate the dynamical behavior of the planar polynomial system which describes the evolution of the isotropic star. It is shown that the system has no global [Formula: see text] and no global analytic first integrals. It has an
Autor:
Najmeh Khajoei, Mohammadreza Molaei
Publikováno v:
International Journal of Modelling, Identification and Control. 32:189
In this paper we investigate behaviour at infinity of a physical 3-dimensional chaotic system via Poincare compactification method. This system has been introduced by Vaidyanathan et al. (2017a). We plot the phase portrait of the system for parameter
Autor:
Mohammadreza Molaei, Najmeh Khajoei
Publikováno v:
The European Physical Journal Plus. 131
In this paper we introduce the universal functions which describe the sensitivity of metrics on the local charts of their ambient manifolds. We find these functions for Bianchi type II, V, VII and IX cosmological models. We also find these values for