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本书系统地介绍了具有扩散的恒化器模型的主要研究成果,具体内容包括简单的非均匀恒化器模型、具有不同扩散率的非均匀恒化器模型、具有拥挤效应的非均匀恒化器模型、多资源的非均匀恒化器模型、具有抑制剂的非均匀恒化器模型共存态的存在性、*性或多重性以及模型解的长时行为,分析了物种生长率、抑制剂、扩散率、拥挤效应等因素对模型共存态及长时行为的影响,解释了相应的自然现象。
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Contents
Preface
Chapter 1 Introduction and Preliminaries 1
1.1 Derivation of the basic chemostat model 1
1.2 Brief review on the modified chemostat models 4
1.3 Preliminaries 7
1.4 Notes 14
Chapter 2 Competition in the Unstirred Chemostat 15
2.1 The model 15
2.2 Simplification 18
2.3 Single population growth and extinction 20
2.4 Coexistence 30
2.5 Notes 33
Chapter 3 Global Bifurcation of the Unstirred Chemostat Model 35
3.1 Introduction 35
3.2 Semitrivial steady-state solutions 37
3.3 Global bifurcation 43
3.4 Stability 50
3.5 Notes 53
Chapter 4 Uniqueness and Stability for the Unstirred Chemostat Model 54
4.1 Preliminaries 55
4.2 Bifurcation from a double eigenvalue 61
4.3 Uniqueness and stability 66
4.4 Notes 81
Chapter 5 Competition between Two Similar Species 82
5.1 Introduction 82
5.2 Stability of semitrivial equilibria 87
5.3 Lyapunov-Schmidt reduction 89
5.4 Stability of coexistence solutions 95
5.5 Dynamical behavior 99
5.6 Discussion 102
Chapter 6 The Unstirred Chemostat Model with Di.erent Di.usion Rates 103
6.1 The model and main results 104
6.2 The global attractor 109？
6.3 Equilibria 118
6.4 Uniqueness of single population equilibria 125
6.5 Notes 128
Chapter 7 Crowding E.ects on Coexistence Solutions 129
7.1 The model and main results 129
7.2 Single population model 133
7.3 Existence of positive solutions 144
7.4 Bifurcation from a simple eigenvalue 152
7.5 Bifurcation from a double eigenvalue 157
7.6 Crowding e.ects of species 163
7.7 Discussion 165
Chapter 8 The Unstirred Chemostat Model with Two Substitutable Resources 166
8.1 The model 167
8.2 The special case of m = n 169
8.3 Positive solution for general m; n 172
8.4 Longtime behavior of the limiting system 180
8.5 Notes 186
Chapter 9 Competition for Two Complementary Resources in the Unstirred Chemostat 187
9.1 Single population model 188
9.2 Two-species model with same di.usion rate 192
9.3 Two-species model with di.erent di.usion rates 203
9.4 Notes 218
Chapter 10 E.ects of Inhibitor in the Unstirred Chemostat 220
10.1 The model 221
10.2 Existence of coexistence solutions 224
10.3 The e.ect of inhibitor 230
10.4 Numerical simulations 264
10.5 Notes 269
Bibliography 270
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