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This book introduces some basic mathematical tools in reaction-diffusion models, with applications to spatial ecology and evolutionary biology. It is divided into four parts.
The first part is an introduction to the maximum principle, the theory of principal eigenvalues for elliptic and periodic-parabolic equations and systems, and the theory of principal Floquet bundles.
The second part concerns the applications in spatial ecology. The authors discuss the dynamics of a single species and two competing species, as well as some recent progress on N competing species in bounded domains. Some related results on stream populations and phytoplankton populations are also included. They also discuss the spreading properties of a single species in an unbounded spatial domain, as modeled by the Fisher-KPP equation.
The third part concerns the applications in evolutionary biology. It describes the basic notions of adaptive dynamics, such as evolutionarily stable strategies and evolutionary branching points, in the context of a competition model of stream populations. It also discusses a class of selection-mutation models describing a population structured along a continuous phenotypical trait.
The fourth part consists of several appendices, which present a self-contained treatment of some basic abstract theories in functional analysis and dynamical systems. Topics include the Krein-Rutman theorem for linear and nonlinear operators, as well as some elements of monotone dynamical systems and abstract competition systems.
Most of the book is self-contained and it is aimed at graduate students and researchers who are interested in the theory and applications of reaction-diffusion equations.
Part I Linear Theory
1. The Maximum Principle and the Principal Eigenvalues for Single Equations
2. The Principal Eigenvalue for Periodic-Parabolic Problems
3. The Maximum Principle and the Principal Eigenvalue for Systems
4. The Principal Floquet Bundle for Parabolic Equations
Part II Ecological Dynamics
5. The Logistic Equation With Diffusion
6. Spreading in Homogeneous and Shifting Environments
7. The Lotka-Volterra Competition-Diffusion Systems for Two Species
8. Dynamics of Phytoplankton Populations
Part III Evolutionary Dynamics
9. Elements of Adaptive Dynamics
10. Selection-Mutation Models
Part IV Appendices
A. The Fixed Point Index
B. The Krein-Rutman Theorem
C. Subhomogeneous Dynamics
D. Existence of Connecting Orbits
E. Abstract Competition Systems in Ordered Banach Spaces
Index
King-Yeung Lam is an associate professor of mathematics at the Ohio State University. His areas of specialization are partial differential equations and mathematical biology. He has worked on the mathematical aspects of competition of multiple species, the evolution of dispersal, asymptotic spreading of species, population dynamics of phytoplankton species, as well as free boundary problems describing cancer and a range of diseases.
Yuan Lou is a professor of mathematics at Shanghai Jiao Tong University. His areas of specialization are partial differential equations and mathematical biology. He has worked on the mathematical aspects of cross-diffusion systems, Lotka-Volterra competition models with diffusion, population dynamics of phytoplankton species, and the modelling and analysis of infectious diseases. He is the former associate director of the Mathematical Biosciences Institute at the Ohio State University, and the founding director of the Institute for Mathematical Sciences at Renmin University of China.
