18 citations · 20 across the 5 of their papers we have counts for
6 papers
FitzHugh-Nagumo equation: bifurcations, slow-fast system and dynamics near infinity
Alexandre A. P. Rodrigues, Nasrin Sadri
In this paper, we present a qualitative and bifurcation analysis of the three-parameter FitzHugh-Nagumo system and its compactified formulation. The study is structured according t…
Global Centers and Phase Portraits in Generalized Duffing Oscillators: A Comprehensive Study of the Center-Focus Problem
Gabriel Rondón, Nasrin Sadri
This work presents a comprehensive study of the generalized Duffing oscillator, a fundamental model in nonlinear dynamics described by the system $$ \dot{x} = y, \quad \dot{y} = -α…
Invariant Tori and Periodic Orbits in the FitzHugh-Nagumo System
Murilo R. Cândido, Douglas D. Novaes, Nasrin Sadri
The FitzHugh-Nagumo system is a -parameter family of D vector field used for modeling neural excitation and nerve impulse propagation. The origin represents a Hopf-zero equil…
Symmetry-breaking singular controller design for Bogdanov-Takens bifurcations with an application to Chua system
Majid Gazor, Nasrin Sadri
We provide a complete symmetry-breaking bifurcation control for equivariant smooth differential systems with Bogdanov-Takens singularities. Controller coefficient space is partitio…
Bifurcation controller designs for the generalized cusp plants of Bogdanov--Takens singularity with an application to ship control
Majid Gazor, Nasrin Sadri
Nonlinear controlled plants with Bogdanov-Takens singularity may experience surprising changes in their number of equilibria, limit cycles and/or their stability types when the con…
Bifurcation control and universal unfolding for Hopf-zero singularities with leading solenoidal terms
Majid Gazor, Nasrin Sadri
In this paper we introduce universal asymptotic unfolding normal forms for nonlinear singular systems. Next, we propose an approach to find the parameters of a parametric singular…