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- W2786032012 abstract "We establish new global bifurcation theorems for dynamical systems in terms of local semiflows on complete metric spaces. These theorems are applied to the nonlinear evolution equation $u_t+A u=f_lambda(u)$ in a Banach space $X$, where $A$ is a sectorial operator with compact resolvent. Assume that $0$ is always a trivial stationary solution of the equation. We show that the global dynamic bifurcation branch $Gamma$ of a bifurcation point $(0,lambda_0)$ either meets another bifurcation point $(0,lambda_1)$, or is unbounded, completely extending the well-known Rabinowitz Global Bifurcation Theorem on operator equations to nonlinear evolution equations without any restrictions on the crossing number. In the case where $f_lambda(u)=lambda u+f(u)$, due to the {em nonnegativity} of the Conley index we can even prove a stronger conclusion asserting that only one possibility occurs for $Gamma$, that is, $Gamma$ is necessarily unbounded. This result can be expected to help us have a deeper understanding of the dynamics of nonlinear evolution equations. As another example of applications of the abstract bifurcation theorems, we also discuss the bifurcation and the existence of nontrivial solutions of the elliptic equation $-Delta u=f_lambda(u)$ on a bounded domain in $mathbb{R}^n$ ($ngeq 3$) associated with the homogenous Dirichlet boundary condition. Some new results with global features are obtained." @default.
- W2786032012 created "2018-02-23" @default.
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- W2786032012 date "2018-02-06" @default.
- W2786032012 modified "2023-09-27" @default.
- W2786032012 title "Global Bifurcation of Dynamical Systems and Nonlinear Evolution Equations" @default.
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