Elliptic Boundary Value Problems With Indefinite Weights presents a unified approach to the methodologies dealing with eigenvalue problems involving indefinite weights. The principal eigenvalue for such problems is characterized for various boundary conditions. Such characterizations are used, in particular, to formulate criteria for the persistence and extinctions of populations, and applications of the formulations obtained can be quite extensive.

Modelling Diffusion and Boundary Conditions
Existence, Coercivity and Monotonicity Results
The Case of Potential-Based Drift
Degenerate Elliptic Equations
Minimax Formulations of the Principal Eigenvalue for Indefinite Weights
Appendix
Preliminaries

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