Mathematics
Limit Cycle
100%
Differential Equation
68%
Polynomial
60%
Vector Field
49%
Critical Point
26%
Orbit
26%
Integral
23%
Differential System
22%
Upper Bound
22%
Difference Equation
21%
Discrete Dynamical System
14%
Periodic Solution
14%
Dynamical System
14%
Phase Portrait
12%
Ordinary Differential Equation
11%
Hamiltonian Systems
11%
Fixed Points
10%
Trigonometric
9%
Chebyshev
9%
Parameter Family
8%
Algebraic Curve
8%
Traveling Wave Solution
8%
Periodic Point
7%
Trigonometric Polynomial
7%
Probability Theory
6%
Melnikov Function
6%
Initial Condition
6%
Periodic Orbit
6%
Monomials
5%
Lower and upper bounds
5%
Singular Point
5%
Explicit Expression
5%
Nonexistence
5%
Polynomial Maps
5%
Keyphrases
Limit Cycle
73%
Number of Limit Cycles
36%
Differential Equations
33%
Periodic Orbits
28%
Vector Field
25%
Abel Equation
20%
Periodic Function
18%
Difference Equations
18%
Discrete Dynamical Systems
16%
Abelian Integral
14%
Isochronous Center
13%
Center Problem
13%
Planar Differential System
13%
Planar System
13%
Periodic Solution
12%
Planar Vector Fields
12%
Polynomial Differential Equations
11%
Differential System
11%
Dynamical Systems
10%
Phase Portrait
10%
Quadratic Systems
10%
Cubic System
10%
Lyapunov
9%
First Integral
8%
Ordinary Differential Equations
8%
Hamiltonian Systems
8%
Number of Zeros
8%
Trigonometric Polynomials
8%
Academic Press
8%
Lyapunov Constant
7%
Limit Cycle Bifurcation
7%
One-parameter Family
7%
Period Annulus
7%
Periodic Points
7%
Planar Polynomial System
7%
Global Periodicity
6%
Period Constant
6%
Homogeneous Nonlinearities
6%
Family of Polynomials
6%
Bifurcation
6%
Planar Polynomials
6%
Non-autonomous
6%
Melnikov Function
6%
Monomial
6%
Lie Symmetries
5%
Polynomial Perturbations
5%
Non-autonomous Differential Equation
5%
New Criteria
5%
Weak Focus
5%
Periodic Sequence
5%
