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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1503.01534math-phmath.DSmath.MPmath.SG
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完全可积系统中双曲奇点的生成

Generating hyperbolic singularities in completely integrable systems

Holger R. Dullin, Álvaro Pelayo

摘要:

设$(M,Ω)$是一个连通的辛4-流形,$F=(J,H) : M \to \mathbb{R}^2$是$M$上的一个完全可积系统,其中只有非退化奇点,且$J : M \to \mathbb{R}$是一个真映射.假设$F$不具有双曲块的奇点,并且$p_1,...,p_n$是$F$的焦点-焦点奇点。对于每个子集$S=\{i_1,...,i_j\}$,我们将展示如何修改$F$本地周围的任何$p_i, i \in S$,以创建一个新的可积系统$\tilde{F}=(J, \tilde{H}) : M \to \mathbb{R}^2$,使其经典谱$\tilde{F}(M)$包含$j$光滑曲线的奇异值对应的非退化横向双曲奇点的$\tilde{F}$。此外,$\tilde{F}$的焦点-焦点奇点精确地为$p_i$、$i \in \{1,...,n\} \setminus S$,并且这些$p_i$中的每一个是非简并的。证明是基于Eliasson的非退化奇点的线性化定理,和哈密尔顿Hopf分支的性质。

英文摘要:

Let $(M,Ω)$ be a connected symplectic 4-manifold and let $F=(J,H) : M \to \mathbb{R}^2$ be a completely integrable system on $M$ with only non-degenerate singularities and for which $J : M \to \mathbb{R}$ is a proper map. Assume that $F$ does not have singularities with hyperbolic blocks and that $p_1,...,p_n$ are the focus-focus singularities of $F$. For each subset $S=\{i_1,...,i_j\}$ we will show how to modify $F$ locally around any $p_i, i \in S$, in order to create a new integrable system $\tilde{F}=(J, \tilde{H}) : M \to \mathbb{R}^2$ such that its classical spectrum $\tilde{F}(M)$ contains $j$ smooth curves of singular values corresponding to non-degenerate transversally hyperbolic singularities of $\tilde{F}$. Moreover the focus-focus singularities of $\tilde{F}$ are precisely $p_i$, $i \in \{1,...,n\} \setminus S$, and each of these $p_i$ is non-degenerate. The proof is based on Eliasson's linearization theorem for non-degenerate singularities, and properties of the Hamiltonian Hopf bifurcation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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