scholarly journals BIFURCATION ANALYSIS OF STABILITY OF TRIANGULAR EQUILIBRIUM POINTS IN THE ELLIPTIC RESTRICTED PROBLEM OF THREE BODIES

2017 ◽  
Vol 115 (2) ◽  
Author(s):  
T. Usha ◽  
A. Narayan
Keyword(s):  
Bifurcation Analysis ◽  
Restricted Problem ◽  
Equilibrium Points ◽  
Elliptic Restricted Problem ◽  
Analysis Of Stability

scholarly journals Hopf bifurcation for an SIR model with age structure

2021 ◽  
Author(s):  
HUI CAO ◽  
Dongxue Yan ◽  
Xiaxia Xu
Keyword(s):  
Cauchy Problem ◽  
Hopf Bifurcation ◽  
Bifurcation Analysis ◽  
Age Structure ◽  
Equilibrium Points ◽  
Sir Model ◽  
Numerical Examples ◽  
System Parameters ◽  
Stability And Instability ◽  
Densely Defined

This paper deals with an SIR model with age structure of infected individuals. We formulate the model as an abstract non-densely defined Cauchy problem and derive the conditions for the existence of all the feasible equilibrium points of the system. The criteria for both stability and instability involving system parameters are obtained. Bifurcation analysis indicates that the system with age structure exhibits Hopf bifurcation which is the main result of this paper. Finally, some numerical examples are provided to illustrate our obtained results.

Equations of motion of elliptic restricted problem of three bodies with variable mass

1988 ◽  
Vol 45 (4) ◽  
pp. 387-393 ◽  
Author(s):  
R. K. Das ◽  
A. K. Shrivastava ◽  
B. Ishwar
Keyword(s):  
Restricted Problem ◽  
Equations Of Motion ◽  
Variable Mass ◽  
Elliptic Restricted Problem

scholarly journals The Mechanism of Branching of Three-Dimensional Periodic Orbits from the Plane

1983 ◽  
Vol 74 ◽  
pp. 213-224
Author(s):  
I.A. Robin ◽  
V.V. Markellos
Keyword(s):  
Recent Work ◽  
Periodic Orbits ◽  
Restricted Problem ◽  
Three Dimensional ◽  
General Situation ◽  
Orbital Symmetry ◽  
Resonant Orbits ◽  
Symmetry Properties ◽  
Elliptic Restricted Problem ◽  
Symmetric Periodic Orbits

AbstractA linearised treatment is presented of vertical bifurcations of symmetric periodic orbits(bifurcations of plane with three-dimensional orbits) in the circular restricted problem. Recent work on bifurcations from vertical-critical orbits (av = ±1) is extended to deal with the v more general situation of bifurcations from vertical self-resonant orbits (av = cos(2Πn/m) for integer m,n) and it is shown that in this more general case bifurcating families of three-dimensional orbits always occur in pairs, the orbital symmetry properties being governed by the evenness or oddness of the integer m. The applicability of the theory to the elliptic restricted problem is discussed.

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