本書從數(shù)學(xué)的角度初步介紹了定性微分方程和離散動(dòng)力系統(tǒng),包括了理論性證明、計(jì)算方法和應(yīng)用。全書分兩部分,即微分方程的連續(xù)時(shí)間和動(dòng)力系統(tǒng)的離散時(shí)間,可分別用于一學(xué)期的課程, 或兩者結(jié)合為一年期的課程。
Preface
Historical Prologue
Part 1. Systems of Nonlinear Differential Equations
Chapter 1. Geometric Approach to Differential Equations
Chapter 2. Linear Systems
2.1. Fundamental Set of Solutions
Exercises 2.1
2.2. Constant Coefficients: Solutions and Phase Portraits
Exercises 2.2
2.3. Nonhomogeneous Systems: Time-dependent Forcing
Exercises 2.3
2.4. Applications
Exercises 2.4
2.5. Theory and Proofs
Chapter 3. The Flow: Solutions of Nonlinear Equations
3.1. Solutions of Nonlinear Equations
Exercises 3.1
3.2. Numerical Solutions of Differential Equations
Exercises 3.2
3.3. Theory and Proofs
Chapter 4. Phase Portraits with Emphasis on Fixed Points
4.1. Limit Sets
Exercises 4.1
4.2. Stability of Fixed Points
Exercises 4.2
4.3. Scalar Equations
Exercises 4.3
4.4. Two Dimensions and Nullclines
Exercises 4.4
4.5. Linearized Stability of Fixed Points
Exercises 4.5
4.6. Competitive Populations
Exercises 4.6
4.7. Applications
Exercises 4.7
4.8. Theory and Proofs
Chapter 5. Phase Portraits Using Scalar Functions
5.1. Predator-Prey Systems
Exercises 5.1
5.2. Undamped Forces
Exercises 5.2
5.3. Lyapunov Functions for Damped Systems
Exercises 5.3
5.4. Bounding Functions
Exercises 5.4
5.5. Gradient Systems
Exercises 5.5
5.6. Applications
Exercises 5.6
5.7. Theory and Proofs
Chapter 6. Periodic Orbits
6.1. Introduction to Periodic Orbits
Exercises 6.1
6.2. Poincare-Bendixson Theorem
Exercises 6.2
6.3. Self-Excited Oscillator
Exercises 6.3
6.4. Andronov-HopfBifurcation
Exercises 6.4
6.5. Homoclinic Bifurcation
……
Part 2. Iteration of Functions