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arXiv 1407.3306math.APmath.DS
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关于全局吸引子的连续性

On the continuity of global attractors

Luan Hoang, Eric J. Olson, James C. Robinson

摘要:

设$Λ$是完全度量空间,$\{S_λ(\cdot):\ λ\inΛ\}$是具有全局吸引子${\mathscr A}_λ$的参数化半群族.我们假设存在一个固定的有界集合$D$使得对每个$λ\inΛ$有${\mathscr A}_λ\subset D$.通过查看作为$S_λ(t)D$的集合的$t\to\infty$的极限的吸引子,我们给出了简单的证明“等吸引力”的等价性连续(当这种收敛是均匀的$λ$),并表明吸引子${\mathscr A}_λ$是连续的$λ$在Baire范畴的意义下的剩余参数集(当收敛仅是逐点的)。

英文摘要:

Let $Λ$ be a complete metric space, and let $\{S_λ(\cdot):\ λ\inΛ\}$ be a parametrised family of semigroups with global attractors ${\mathscr A}_λ$. We assume that there exists a fixed bounded set $D$ such that ${\mathscr A}_λ\subset D$ for every $λ\inΛ$. By viewing the attractors as the limit as $t\to\infty$ of the sets $S_λ(t)D$, we give simple proofs of the equivalence of `equi-attraction' to continuity (when this convergence is uniform in $λ$) and show that the attractors ${\mathscr A}_λ$ are continuous in $λ$ at a residual set of parameters in the sense of Baire Category (when the convergence is only pointwise).

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